Tigray Region
Tigray is bordered by Eritrea to the north, Sudan to the west, the Afar Region to the east, and the Amhara Region to the south and southwest. Besides Mekelle, major cities include Adigrat, Aksum, Shire, Humera, Adwa, Alamata, Wukro, Maychew, Sheraro, Abiy Adi, Korem, Qwiha, Hawzen, Mekoni and Zalambessa. There is also the historically significant town of Yeha.
Oromia Region
Oromia shares a boundary with almost every region of Ethiopia except for the Tigray Region. This boundary has been disputed with Oromia's neighbors in a number of cases, most notably between Oromia and the Somali Region. One attempt to resolve the dispute between the two regions was the October 2004 referendum held in about 420 kebeles in 12 woredas across five zones of the Somali Region. According to the official results of the referendum, about 80% of the disputed areas have fallen under Oromia administration, though there were allegations of voting irregularities in many of them. The results led over the following weeks to minorities in these kebeles being pressured to leave. In Oromya, estimates based on figures given by local woreda and kebele authorities suggest that 21,520 people have been displaced in border woredas, namely Mieso, Doba, and Erer in the Mirab and Misraq Hararghe Zones. Federal authorities believe that this number may be overstated by as much as 11,000. In Doba, the Ministry of Federal Affairs put the number of IDPs at 6,000. There are also more than 2,500 displaced persons in Mieso. In addition, there were reports of people being displaced in the border area of Moyale and Borena zones due to this conflict.