Military operations

2021 Tigray offensive

offensive of the Tigray War

The Tigray war was an armed conflict that lasted from 3 November 2020 to 3 November 2022. It was a civil war primarily fought in the Tigray Region of Ethiopia between forces allied with the Ethiopian federal government and Eritrea on one side, and the Tigray People's Liberation Front (TPLF) on the other. After years of increased tensions and hostilities between the TPLF and the governments of Ethiopia and Eritrea, fighting began when TPLF forces attacked the Northern Command headquarters of the Ethiopian National Defense Force (ENDF), alongside a number of other bases in Tigray. The ENDF counterattacked from the south – while Eritrean Defence Forces (EDF) began launching attacks from the north – which Prime Minister Abiy Ahmed described as a "law enforcement operation". Federal allied forces captured Mekelle, the capital of the Tigray Region, on 28 November, after which Abiy declared the operation "over." However, the TPLF stated soon afterwards that it would continue fighting until the "invaders" were out, and on 28 June 2021, the Tigray Defense Forces (TDF) retook Mekelle; by July the same year, they had also advanced into the Amhara and Afar regions. In early November 2021, the TDF, together with the Oromo Liberation Army (OLA), took control of several towns on the highway south from Tigray Region towards Addis Ababa, and the TPLF stated that it considered "marching on [the capital]." Together with seven smaller rebel groups, the TPLF and OLA declared a coalition aiming to "dismantle Abiy's government by force or by negotiations, and then form a transitional authority." After a successful government counter-offensive in response, and then a series of negotiations with the TPLF, Ethiopia declared an indefinite humanitarian truce on 24 March 2022, in order to allow the delivery of humanitarian aid into Tigray. However, fighting dramatically re-escalated in late August 2022, after peace talks broke down. Rapid mobilization of troops soon followed, with Ethiopia, Eritrea and Tigray reportedly organizing hundreds of thousands of troops against each other by October the same year. After a number of peace and mediation proposals in the intervening years, Ethiopia and the Tigrayan rebel forces agreed to a cessation of hostilities on 2 November, which went into effect the day after; Eritrea was not a party to the agreement, however, and it largely continued to occupy parts of Tigray as of 2024. All sides, particularly the ENDF, EDF, Amhara forces and TDF, committed war crimes during the conflict. Mass extrajudicial killings of civilians took place throughout, including in Axum, Bora, Chenna, Kobo, the Hitsats refugee camp, Humera, Mai Kadra, the Mahbere Dego, and Zalambessa. Additionally, the ENDF and EDF were accused of genocide. Between 100,000 and 600,000 people were killed, and war rape became a "daily" occurrence, with girls as young as 8 and women as old as 72 being raped, often in front of their families. A major humanitarian crisis developed as a result of the war, which led to a widespread famine. It also inflicted immense economic damage on the region, with the cost of rebuilding alone estimated to be roughly $20 billion. Large-scale fighting in the area resumed in the 2026 Ethiopian offensive, as TPLF forces declared a defensive war against Ethiopia. Tigrayan forces and Ethiopian federal forces clashed while Ethiopia accused Eritrea of supporting rebel groups. The renewed fighting occurred amid deteriorating relations between Ethiopia and Eritrea and unresolved regional tensions involving Sudan and Egypt.

Background

Historical and political context

Following the end of the Ethiopian Civil War in 1991, Ethiopia became a dominant-party state under the rule of the Ethiopian People's Revolutionary Democratic Front (EPRDF), a coalition of four ethnically based parties. The founding and most influential member was the Tigray People's Liberation Front (TPLF), led by Meles Zenawi, who was the prime minister of Ethiopia until his death in 2012. He was succeeded by Deputy Prime Minister Hailemariam Desalegn, the chairman of the Southern Ethiopian People's Democratic Movement (SEPDM), a coalition member. On 15 February 2018, Hailemariam announced his resignation as both prime minister and chairman of the EPRDF, owing to a growing discontent within the public, fueled by a reaction to 27 years of repressive governance. On 28 March 2018, in a closed-door election to chair the EPRDF, executive committee members elected the Oromo Peoples' Democratic Organisation (OPDO) chairman Abiy Ahmed. On 2 April 2018, Ethiopian parliament elected Abiy as prime minister. One of Abiy's first actions after his election was to initiate a warming of relations with Eritrea, a long-time rival of the TPLF, to end a 20-year long border conflict. While this decision was considered a cause of celebration at the time, many within the Tigray Region were heavily critical of this, seeing it as a betrayal of those who died in the 1998–2000 war. The TPLF condemned the peace initiatives, saying they were hastily made, had "fundamental flaws", and also claimed it was decided on without consulting long-time TPLF members. On 1 December 2019, Abiy merged the ethnic and region-based parties of the EPRDF (which had governed Ethiopia for 28 years) and several opposition parties into his new Prosperity Party. The TPLF, which had long dominated Ethiopian politics, refused to join this new party. After losing the election and being ousted from the federal government, TPLF officials relocated to the Tigray Region, continuing to administer control there while frequently clashing with the federal government. In one instance, the Tigray regional government was reported to have defied the federal government and refused to allow Ethiopian Federal Police to arrest Getachew Assefa, the former chief of the National Intelligence and Security Service (NISS) of Ethiopia and executive member of the TPLF. The Ethiopian government and its supporters accused the TPLF of trying to re-establish their rule over the country through violence and force. In turn, the TPLF accused the federal government of accumulating too much power for itself, and that it was engaging in ethnic discrimination of Tigrayans.

Lead-up to the war

Throughout 2020, tensions between the federal government and the TPLF escalated in the months leading up to November. In March, the National Election Board of Ethiopia delayed the general elections – originally scheduled for 29 August 2020 – to a then-undetermined date, due to the COVID-19 pandemic. The terms of federal and regional lawmakers, as well as the executive branch, were then extended by federal parliament beyond the October 2020 constitutional mandates. The TPLF, led by its chairman Debretsion Gebremichael, rejected these measures, arguing that they were unconstitutional, and held its own regional election on 9 September, in defiance of the federal government. Several journalists were barred by the Ethiopian government from travelling to cover Tigray's regional election. Ethiopia considered the Tigray election to be illegal, and responded by slashing federal funding to the region, a decision the TPLF described as "tantamount to declaration of war."

In late September 2020, the TPLF stated that the constitutional term limit of the House of Federation, the House of Peoples' Representatives, the prime minister, and the Council of Ministers was 5 October 2020 and that for this reason, it would consider "the incumbent" constitutionally illegitimate after 5 October; they proposed replacing the government with a technocratic caretaker government, as detailed in a plan posted on Facebook by the Coalition of Ethiopian Federalist Forces. Ethiopian elite units were transported to Gherghera base near Asmara, as part of an alleged pact between Prime Minister Abiy and Eritrean President Isaias Afwerki to "strike out of existence the TPLF," according to former Eritrean Minister of Defence Mesfin Hagos. In late October 2020, the Ethiopian Reconciliation Commission stated that it was trying to mediate between the federal government and the TPLF, as well as the other regional governments, but that the pre-conditions set by all sides were blocking progress. As tension continued to grow, a brigadier general appointed by Abiy was prevented by the Tigray government from taking up his military post. The same day before the Tigray forces launched the Northern Command attacks, the federal parliament of Ethiopia had suggested designating the TPLF as a terrorist organization.

=== Constitutional context === The 1995 Constitution of Ethiopia states in Article 39.1, "Every Nation, Nationality, and People in Ethiopia has an unconditional right to self-determination, including the right to secession." Article 62.9 grants the House of Federation the right to "order Federal intervention if any State [government], in violation of [the] Constitution, endangers the constitutional order."

Course of the war

=== Initial fighting (3–28 November 2020) === Northern Command attacks

Just before midnight on 3 November 2020, Tigray Special Forces and allied local militia attacked the Ethiopian National Defense Force (ENDF) Northern Command headquarters in Mekelle, the Fifth Battalion barracks in Dansha, and other Northern Command bases. Several people were killed and the TPLF claimed the attack was carried out in self-defense or preemptive self-defense. In retaliation, an Ethiopian offensive was launched on 4 November, which was accompanied by the declaration of a state of emergency, the creation of the State of Emergency Inquiry Board and a shutdown of government services in the Tigray Region. During the subsequent days, skirmishes continued and the Ethiopian federal parliament declared the creation of an interim government for Tigray. Ethiopian offensives in the north were accompanied with airstrikes and several towns and cities were retaken.

Early massacres

On the night of 9 to 10 November 2020, 600 civilians, mostly Amharas and Welkait, were killed in a massacre in the town of Mai Kadra with machetes and knives used by local militias and police that were loyal to the TPLF, according to preliminary investigations by Amnesty International and the Ethiopian Human Rights Commission; other refugees, interviewed by the Financial Times and Reuters, said it was the Amhara militia who were the perpetrators and Tigrayans who were the victims. Two days later, refugees interviewed by the Daily Telegraph, The Guardian and The New York Times stated that Amhara militias, including Fano, and the ENDF carried out beatings and massacres of 92 Tigrayans in Humera. Humera was shelled from the direction of the Eritrean–Ethiopian border for two days around 9–11 November. The ENDF gained control of the town one day later. Within the same month, Amhara Region forces took over and occupied Western Tigray. Offensives of joint ENDF-Amhara Region-Eritrean forces into Tigray were facilitated by the intervention of "Pterosaurus" drones, launched by the United Arab Emirates from its base in Assab, Eritrea. The Chinese-made, armed drones bombed Tigrayan artillery and weapons depots. In the late hours of 13 November 2020, Tigray forces fired a rocket towards the airports of Bahir Dar and Gondar in the Amhara Region. On 14 November, Tigray forces launched rockets at the Eritrean capital of Asmara, but the missiles missed. The Tigray government claimed these locations contained military terminals that served as bases to carry out airstrikes.

Mekelle offensive

From 17 to 19 November, Ethiopian forces captured the Raya district and the towns of Shire, Alamata, Adwa, and Axum, and began moving towards Adigrat. Fighting between Tigray and Eritrea took place in Adi Quala, Zalambessa, Taruna, Ali Tina, Wadqomdi, and Badme. On 23 November, Ethiopian forces reached the regional capital of Mekelle and encircled it. A military spokesperson for Ethiopia South Command, Colonel Dejene Tsegaye, announced that Mekelle would be shelled, and told Tigray civilians to flee the city because Ethiopian forces would show no mercy. Though TPLF leaders and special forces had already left the city, Ethiopian forces continued their direct assault on Mekelle on the morning of 28 November, and started heavily shelling the city. By the evening, Prime Minister Abiy declared Ethiopian forces had taken full control of the city. In total, 27 civilians were killed and 100 others were injured. The Tigray government vowed to continue fighting.

=== Tigrayan guerrilla warfare (November 2020 – June 2021) === Formation of the Tigray Defense Forces After Ethiopian federal forces and their allies captured Mekelle and other major cities, forces loyal to the Tigray government began to regroup into mountainous areas of the region and reorganized under the banner of the Tigray Defense Forces (TDF). This retreat was partially caused by the fact that a large portion of the TDF's artillery had been destroyed by air strikes. The TDF also began to dig into their positions in rural Tigray, marking the start of a guerrilla campaign against Ethiopian-allied forces from the mountains.

Eritrean occupation of the northeast

On 28 and 29 November, witnesses and survivors, including refugees in Sudan, reported that the Eritrean Defence Forces (EDF) carried out the Axum massacre of about 720 to 800 civilians. The Eritrean government stated that it was angered by Amnesty International's report on the massacre, calling it "transparently unprofessional" and "politically motivated" and accusing Amnesty of fabricating evidence. However, refugees also spoke of the EDF killing 80–150 people in Idaga Hamus on 30 November, as part of a larger series of extrajudicial killings known as the Adigrat massacres. A witness told Al Jazeera that, on 4 December, Eritrean troops entered her town in southeastern Tigray and attempted to rape her; this statement is corroborated by other survivors and witnesses, who spoke of rampant sexual violence, massacres and destruction of civilian infrastructure committed by the EDF. In February 2021, the UN chief coordinator of humanitarian efforts Mark Lowcock said that up to 40% of Tigray was not controlled by Ethiopian troops. Aside from Tigrayan rebel forces, he said that much of that area was under the control of the EDF, pursuing their own objectives independent of Ethiopian command. By early March, residents said that the number of Eritrean soldiers in Tigray was in the thousands.

Continued insurgency

By mid-December, fighting had reached Hagere Selam, Samre, Dogu'a, Kola Tembien, May Tsemre and localities around Maychew. During this time, a violently enforced curfew was set up by Ethiopian forces along with Eritrean soldiers. According to the Europe External Programme with Africa (EEPA), in Wukro over 200 people were killed and the town was left deserted. The Ethiopian government denied involvement in the killing. On 9 January 2021, Ethiopian TV reported that 300 refugees in Hitsats camp were executed by the TPLF. According to refugees, pro-TPLF forces used Hitsats as a base for several weeks in November 2020, killing several refugees who wanted to leave the camp to get food and, in one incident, killed nine young Eritrean men in revenge for having lost a battle against the EDF. On 18 February, unidentified militiamen ambushed a passenger bus in Adi Mesino, killing six and injuring 10. Ultimately, the early gains made by the ENDF and EDF against Tigrayan forces did not lead to a decisive defeat of the re-organized and invigorated TDF. In late January, the TDF had rallied and were intensifying their insurgency against Ethiopian forces despite the initial setbacks and heavy losses. During this time fighting was reported to have taken place around Mekelle, and the ENDF had retreated from rural positions towards the city. Several of these clashes took place in mid-February at Samre, a small town 45 km (28 mi) south-west of Mekelle. Thousands of Ethiopian troops supported by artillery, tanks, and airstrikes fought dug-in forces loyal to the Tigray regional government. According to a report by Ghent University, massacres of civilians continued into March, including around 250 in Humera over the course of three days by unconfirmed perpetrators, and 13 in Grizana by the EDF. That same month, an undated video surfaced that purported to show Ethiopian troops executing 11 unarmed men before throwing their bodies off a cliff near Mahibere Dego.

TDF regains territory

Fighting intensified in early April; by this point, the TDF was in control of the rural areas of central and southern Tigray along with parts of eastern and south-eastern Tigray, while the ENDF was in control of the main roads and urban areas. Amhara and Eritrean forces also controlled parts of Tigray in the west and north, respectively. All sides wished to secure a military victory, but they lacked the ability to do so in the near term, and so they began to prepare for a prolonged conflict. The Tigray Defense Forces were engaged in a war of attrition with popular support from the people of Tigray, who were infuriated by war crimes committed by Eritrean and Ethiopian soldiers and worried about a potential decrease in the region's autonomy. This resulted in the TDF growing in strength and the concept of secession from Ethiopia gaining popularity in Tigray, a stance which was considered likely to inflame Amhara-Tigray territorial disputes. On 6 May, Ethiopia's House of Peoples' Representatives declared the TPLF as a terrorist organization. On 21 May, Ethiopia's military prosecutors convicted 3 soldiers of rape, and pressed charges against more than 50 others suspected of killing or raping civilians in Tigray.

=== Tigrayan counter-offensive (June – November 2021) === Retaking of Mekelle

On 22 June 2021, an Ethiopian military cargo plane was shot down over Samre, marking a turn of the war in the TDF's favor. On 28 June 2021, the Tigray Defense Forces retook the city of Mekelle. People celebrated in the streets of Mekelle as the TDF took the city. Ethiopian soldiers, police and administrators were seen leaving, ahead of the occupation by the TDF. Shortly after hearing news of the TDF advance, the Ethiopian government declared an immediate unilateral ceasefire across the Tigray Region. BBC News reporter Vivienne Nunis characterised the ceasefire as an attempt by Prime Minister Abiy Ahmed to save face, the government having little other option. On 29 June, Tigrayan forces vowed to continue their offensive and drive into Eritrea or the Amhara Region if necessary, and said that Mekelle was 100% under the control of Tigrayan forces. On 30 June 2021, the TDF had entered the town of Shire, some 140 kilometres (87 mi) northwest of Mekelle, after it had been abandoned by Eritrean troops. The International Crisis Group claimed that the TDF now controlled most of the Tigray region. The Ethiopian government claimed, on 30 June, that it could re-enter Mekelle in less than three weeks if it wanted to. In the same announcement, the Ethiopian government stated that all Eritrean forces had withdrawn from the region, though this was not confirmed by the Eritrean government.

Tigrayan push in Afar and Amhara

On 6 July 2021, the Tigrayan government mobilised to retake western Tigray from Amhara forces. A TDF offensive starting on 12 July resulted in Tigrayan forces capturing southern Tigray, including the towns of Alamata and Korem. The TDF subsequently crossed the Tekezé River and advanced westward, capturing the town of Mai Tsebri in the Tselemti district, and prompting Amhara officials to call on its militias to arm themselves and mobilise. Following the TDF's rapid advances, Abiy threatened to resume war with Tigray and crush the rebels, raising fears of genocide. He called on other regions of Ethiopia to mobilise their special forces. The Oromia, Sidama, and SNNPR regions answered the call and mobilised. From 17 to 19 July, the TDF began launching attacks in the Afar Region to its east, prompting the Benishangul-Gumuz, Gambela, Harari and Somali regions to join the war. Heavy fighting in western Afar displaced over 54,000 people, and resulted in the TDF reportedly capturing three districts in the region. While the Tigray government claimed it only entered Afar to target federal forces, experts believe their aim was to sever a portion of National Highway A1, a vital trade route for landlocked Ethiopia, linking the capital of Addis Ababa to the Port of Djibouti, from which most of its petroleum products are imported. Following the TDF's counter-attack on two districts of his region, the Amhara regional President, Agegnehu Teshager, called for the total mobilisation of all people of all ages who are armed in the region to fight against the Tigrayans. A similar call was made in Afar. Meanwhile, the city of Weldiya was captured by the TDF on 12 August 2021. On 4 August 2021, some Agew people declared themselves independent from the Amhara Region and formed the Agew Liberation Front (ALF). The next day, Lalibela was reported to have been seized by Tigrayan forces. On 9 August, UNICEF executive director Henrietta Fore expressed concern about reports that over 200 people, including 100 children, had been killed in attacks on displaced families sheltering at a health facility and a school in the Afar Region. On 11 August, the TDF and the Oromo Liberation Army (OLA) announced an alliance to overthrow Abiy Ahmed's government, saying they were also in talks with other rebel groups to establish a "grand coalition". With the TDF advancing deeper into Amhara, various cities across the region began enforcing curfews. On 9 September 2021, the Ethiopian government claimed Tigrayan forces had been "routed" and heavily defeated in the Afar Region. TPLF spokesperson Getachew Reda said its forces had seen no fighting in Afar and had redeployed to the adjoining Amhara Region. On 30 September, amid UN concerns about a blockade of aid deliveries to Tigray, the Ethiopian government expelled 7 top UN officials, reportedly because of "meddling" in its internal affairs, giving the officials 72 hours to leave the country.

October 2021 government-allied offensive

On 8 October 2021, Getachew said that an intensive air campaign by the Ethiopian Air Force began against TDF positions in the North Wollo and North Gondar zones of the Amhara Region, mostly around the towns of Wegeltena, Wurgessa and Haro. He also stated there was a "massive build up of forces on all fronts." The federal government and Amhara regional government did not respond to the claim. On 11 October, Ethiopian-allied forces launched coordinated ground attacks "on all fronts" against the TDF with combined arms including tanks, helicopters, heavy artillery, warplanes, and drones according to the Tigrayan government. General Tsadkan Gebretensae, member of the central command of the TDF said both sides had been preparing for the offensive for months, and predicted that battle would be "decisive". The new offensive effectively ended the unilateral ceasefire declared by the federal government in June and further deepened fears of the developing famine in Tigray, with a federal government blockade still preventing most aid from arriving. Meanwhile, the continued war prompted regional leaders, including Kenyan President Kenyatta, to voice their concerns and urge peace, while US Secretary of State Blinken met with the AU envoy to Ethiopia, former Nigerian President Olusegun Obasanjo, to discuss the crisis. On 13 October, Getachew claimed fighting continued intensifying with "staggering" casualties. He also claimed clashes were taking place near Weldiya and that fighting had resumed in Afar, within the Awra and Chifra districts near the Amhara border. A humanitarian worker citing witnesses said the EDF were fighting the TDF in Berhale, a town in Afar 71 kilometres (44 mi) northeast of Mekelle.

TDF-OLA joint offensive (October – December 2021)

Fall of Dessie and Kombolcha

On 30 October, it was reported that Dessie had fallen to the TDF. However, control over the city was not immediately certain, with the federal government denying its capture and reports of fierce fighting coming from the town. On 31 October, the TDF claimed to have captured Kombolcha, a town 21 km (13 mi) east of Dessie, and the Ethiopian government accused the TDF of massacring over 100 youths in the town. On the same day, the Amhara regional government declared a state of emergency, which included a region-wide curfew. South of Kombolcha, the OLA claimed to have seized control over Kemise on the A2 Highway which links Mekelle to the Ethiopian capital of Addis Ababa, and later declared they were considering an offensive towards the capital. The TDF claimed they also linked up with the OLA. Meanwhile, it was reported that a new roundup of ethnic Tigrayans had occurred in Addis Ababa.

State of emergency and rebel coalition

On 2 November 2021, as the counter-offensive came deeper into federal-controlled territory, the Ethiopian government declared a six-month state of emergency, which envisages the possibility to arrest and detain critics of the government without a court warrant, impose curfews, institute censorship, restrict freedom of movement as well as to call any adult person to fight in the war, for fear of serving from three to ten years in prison. Authorities in Addis Ababa also told residents to register their weapons in order to fend off the anticipated offensive. Four other regional governments also made a call to arms. On 5 November, the TPLF, OLA and other rebel groups declared the creation of a nine-group coalition, called the United Front of Ethiopian Federalist and Confederalist Forces. On 22 November, Prime Minister Abiy stated that he will be leading the fight against the rebels from the battlefront after the TDF claimed to have captured Shewa Robit, saying; "We are now in the final stages of saving Ethiopia." Many countries also urged citizens to leave the country.

Government-allied counter-offensive (November 2021 – March 2022)

From 26 November to 6 December 2021, Ethiopian allied forces recaptured several towns in the Amhara and Afar regions including Lalibela and Shewa Robit, according to the Ethiopian government. On 6 December, government forces claimed to have recaptured the strategic cities of Dessie and Kombolcha. This was later confirmed by TPLF spokesman Getachew Reda; however, he claimed this was a strategic withdrawal, which was "part of their plan". On 12 December, Reuters reported that forces loyal to the TPLF had recaptured the town of Lalibela less than two weeks after government forces and their allies had recaptured control of the town for themselves. Nevertheless, by the end of the month, the federal government had successfully repelled the incursion towards Addis Ababa, and Tigrayan forces were pushed back to Tigray.

Fighting slows down On 20 December 2021, the TPLF announced they had withdrawn their troops from Amhara and Afar, saying they were hoping to create, as stated by TPLF chairman Debretsion Gebremichael, "a decisive opening for peace". Debretsion also requested the establishment of a no-fly zone over Tigray, as well as a weapons embargo against Ethiopia and Eritrea. Following these developments, the ENDF stated that it would not advance any deeper into the Tigray region. However, in January 2022, the Ethiopian Air Force began launching a bombing campaign in the Tigray Region, killing 108 people, including at least 56 from an airstrike targeting an IDP camp in Dedebit. On 7 January – the same day as the Dedebit airstrike – Ethiopia released a number of opposition leaders from prison, including some from the TPLF, and said they desired to have a dialogue with the Tigrayan leadership. On 26 January, the Ethiopian council of ministers also proposed to end the state of emergency.

Ceasefire period (March – August 2022)

On 24 March 2022, the Ethiopian government declared an indefinite humanitarian truce, in order to allow the delivery of humanitarian aid into Tigray. During the ceasefire, both Ethiopia and the TPLF agreed to have talks about an official end to the war. A number of outstanding issues – in particular, the presence of pro-government troops in Tigray's Western Zone and restoring access to basic public service to Tigray – were topics of discussion throughout. Though there were initial hopes of finding a peaceful solution to ending the war, the talks soon became characterized by steadily increasing hostilities between the negotiation parties. By August, talks started to break down, with both the Ethiopian government and the TPLF accusing each other of refusing to make peace.

Resurgence of fighting (August – November 2022)

In late August 2022, after months of ceasefire, fighting resumed. Both sides blamed each other for initiating the fighting, and both also expressed frustration "for a lack of progress towards negotiations to end the 21-month conflict." The fighting itself concentrated in the border area connecting Tigray, Amhara and Afar. Allegations emerged that the Tigray were smuggling in weapons, leading to the Ethiopian Air Force shooting down a plane, claiming it was carrying weapons for the TPLF; meanwhile, the government was accused of indiscriminate air bombardments on civilian targets. Civilians reported that pro-government militias, such as Fano, had gotten involved as well. Exacerbating tensions were severe food shortages, an issue that remained unsolved have particularly affected the Tigray region.

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