Where in the world?
The flag of Azerbaijan has three horizontal bands of blue, red, and green, with a white crescent and an eight-pointed star in the center of the red band.

Azerbaijan

Azərbaycan

Population: 10,110,116

Region: Asia

Subregion: Western Asia

Capital: Baku

Top Level Domain: .az

Currencies: Azerbaijani manat

Border countries

The flag of Armenia has three horizontal bands of red, blue, and orange.

Armenia

Population: 2,963,234

Region: Asia

Capital: Yerevan
The flag of Georgia has five red crosses on a white field.

Georgia

Population: 3,714,000

Region: Asia

Capital: Tbilisi
The flag of Iran has three horizontal stripes of green, white, and red, with the national emblem in the center of the white stripe.

Iran (Islamic Republic of)

Population: 83,992,953

Region: Asia

Capital: Tehran
The flag of Russia has three horizontal stripes of white, blue, and red.

Russian Federation

Population: 144,104,080

Region: Europe

Capital: Moscow
The flag of Turkey has a red field with a white star and crescent slightly left of center.

Turkey

Population: 84,339,067

Region: Asia

Capital: Ankara