Which country does this flag belong to?

Bosnia and Herzegovina, abbreviated BiH or B&H, sometimes called Bosnia–Herzegovina and often known informally as Bosnia, is a country at the crossroads of south and southeast Europe, located in the Balkans.

The flag of Bosnia and Herzegovina contains a wide medium blue vertical band on the fly side with a yellow right triangle abutting the band and the top of the flag. The remainder of the flag is medium blue with seven full five-pointed white stars and two half stars top and bottom along the hypotenuse of the triangle.

The three points of the triangle stand for the three main ethnic groups (or "constituent peoples") of Bosnia and Herzegovina: Bosniaks, Croats, and Serbs. The triangle represents the approximate shape of the territory of Bosnia and Herzegovina. The stars, representing Europe, are meant to be infinite in number and thus they continue from top to bottom. The flag features colors often associated with neutrality and peace – white, blue, and yellow. They are also colors traditionally associated with Bosnian culture and history. The blue background is evocative of the flag of the European Union.