Where in the world?
The flag of the Democratic Republic of the Congo has a sky blue field with a yellow star in the upper hoist-side corner and a diagonal red stripe with a thin yellow border from the lower hoist-side to the upper fly-side.

Congo (Democratic Republic of the)

République démocratique du Congo

Population: 89,561,404

Region: Africa

Subregion: Middle Africa

Capital: Kinshasa

Top Level Domain: .cd

Currencies: Congolese franc

Border countries

The flag of Angola has two horizontal bands of red and black with a yellow half gear wheel crossed by a machete and crowned with a star.

Angola

Population: 32,866,268

Region: Africa

Capital: Luanda
The flag of Burundi has a white field with a red diagonal cross, green and red areas, and a white disk with three red stars in the center.

Burundi

Population: 11,890,781

Region: Africa

Capital: Gitega
The flag of the Central African Republic has four horizontal stripes of blue, white, green, and yellow with a red vertical stripe in the center and a yellow five-pointed star in the upper hoist-side corner.

Central African Republic

Population: 4,829,764

Region: Africa

Capital: Bangui
The flag of the Congo has a green field with a yellow diagonal stripe from the lower hoist-side to the upper fly-side.

Congo

Population: 5,518,092

Region: Africa

Capital: Brazzaville
The flag of Rwanda has three horizontal stripes of blue, yellow, and green with a sun in the top right corner.

Rwanda

Population: 12,952,209

Region: Africa

Capital: Kigali
The flag of South Sudan has three horizontal stripes of black, white, red, and green with a blue triangle on the left side containing a yellow star.

South Sudan

Population: 11,193,729

Region: Africa

Capital: Juba
The flag of Tanzania has a green and blue field with a black diagonal stripe bordered by yellow.

Tanzania, United Republic of

Population: 59,734,213

Region: Africa

Capital: Dodoma
The flag of Uganda has six horizontal stripes of black, yellow, and red with a white circle in the center containing a grey crowned crane.

Uganda

Population: 45,741,000

Region: Africa

Capital: Kampala
The flag of Zambia has a green field with an orange eagle in flight over a rectangular block of three vertical stripes of red, black, and orange in the lower right corner.

Zambia

Population: 18,383,956

Region: Africa

Capital: Lusaka