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The flag of Bosnia and Herzegovina has a blue field with a yellow triangle and white stars along the hypotenuse.

Bosnia and Herzegovina

Bosna i Hercegovina

Population: 3,280,815

Region: Europe

Subregion: Southern Europe

Capital: Sarajevo

Top Level Domain: .ba

Currencies: Bosnia and Herzegovina convertible mark

Border countries

The flag of Croatia has three horizontal stripes of red, white, and blue with the national coat of arms in the center.

Croatia

Population: 4,047,200

Region: Europe

Capital: Zagreb
The flag of Montenegro has a red field with a gold border and the national coat of arms centered in the field.

Montenegro

Population: 621,718

Region: Europe

Capital: Podgorica
The flag of Serbia has a red, blue, and white horizontal tricolor with a coat of arms on the left side.

Serbia

Population: 6,908,224

Region: Europe

Capital: Belgrade