Disputes - international:
Eritrea and Ethiopia agreed to abide by the 2002 Eritrea-Ethiopia Boundary Commission's (EEBC) delimitation decision, but neither party responded to the revised line detailed in the November 2006 EEBC Demarcation Statement; the undemarcated former British administrative line has little meaning as a political separation to rival clans within Ethiopia's Ogaden and southern Somalia's Oromo region; Ethiopian forces invaded southern Somalia and routed Islamist courts from Mogadishu in January 2007; "Somaliland" secessionists provide port facilities in Berbera and trade ties to landlocked Ethiopia; civil unrest in eastern Sudan has hampered efforts to demarcate the porous boundary with Ethiopia

Refugees and internally displaced persons:
refugees (country of origin): 334,014 (South Sudan), 192,082 (Somalia), 160,405 (Eritrea), 41,899 (Sudan) (2019)
IDPs: 2,164,201 (includes conflict- and climate-induced IDPs, excluding unverified estimates from the Amhara region; border war with Eritrea from 1998-2000; ethnic clashes; and ongoing fighting between the Ethiopian military and separatist rebel groups in the Somali and Oromia regions; natural disasters; intercommunal violence; most IDPs live in Sumale state) (2019)

Illicit drugs:
transit hub for heroin originating in Southwest and Southeast Asia and destined for Europe, as well as cocaine destined for markets in southern Africa; cultivates qat (khat) for local use and regional export, principally to Djibouti and Somalia (legal in all three countries); the lack of a well-developed financial system limits the country's utility as a money laundering center