Columbia subject headings:
Africa, Northeast--Economic integration.
Africa, Northeast--Politics and government.
Harvard subject headings:
Africa, Northeast--Economic integration.
Africa, Northeast--Politics and government.
Eritrea--Foreign relations--Ethiopia.
Ethiopia--Foreign relations--Eritrea.
Horn of Africa--Politics and government--21st century.
Princeton subject headings:
Africa, Northeast--Economic integration.
Africa, Northeast--Politics and government.