In July, Ethiopia and Eritrea declared an end to their state of war and agreed to open embassies, develop ports and resume flights between the two countries after decades of hostilities.
Then, Eritrea and Djibouti agreed in September to work on reconciling. Deadly clashes broke out between the Horn of Africa countries in June 2008 after Djibouti accused Asmara of moving troops across the border.
A November 2017 Security Council resolution said the peaceful settlement of the border dispute would be a factor in any review of sanctions on Eritrea. Both the United States and China have military bases in Djibouti.