From the Document: "The small, arid East African country of Djibouti is strategically located along one of the world's busiest shipping routes on the Bab el Mandeb Strait, which serves as the gateway from the Red Sea to the Gulf of Aden and the Indian Ocean. The country has increasingly become a hub for foreign militaries. It is home to U.S. Africa Command's Combined Joint Task Force-Horn of Africa (CJTF-HOA), based at Camp Lemonnier, the only enduring U.S. military installation in Africa. A former French colony, Djibouti also hosts a sizable French military presence and provides facilities for multinational antipiracy operations off Somalia's coast. In 2015, the North Atlantic Treaty Organization (NATO) opened a liaison office in Djibouti to enhance regional antipiracy efforts."
CRS In Focus, IF11303
Congressional Research Service: https://crsreports.congress.gov/