Djibouti — World Flags

The story behind the answer

Djibouti is correct. This flag was adopted at independence in 1977: blue for the sea/sky (and the Issa/Somali people), green for the land (and the Afar), white for peace, and a red star for unity and the struggle for independence.

Fun context: Djibouti controls the Bab-el-Mandeb strait, the gateway to the Red Sea, so many nations base troops there. Memory tip: think “Red star by the Red Sea” and blue-green Horn of Africa—points to Djibouti.