Where in the world?
The flag of Latvia has a carmine red field with a white horizontal stripe in the middle.

Latvia

Latvija

Population: 1,901,548

Region: Europe

Subregion: Northern Europe

Capital: Riga

Top Level Domain: .lv

Currencies: Euro

Border countries

The flag of Belarus has a red field with a green horizontal stripe at the bottom and a white and red ornamental pattern on the hoist side.

Belarus

Population: 9,398,861

Region: Europe

Capital: Minsk
The flag of Estonia has three horizontal stripes of blue, black, and white.

Estonia

Population: 1,331,057

Region: Europe

Capital: Tallinn
The flag of Lithuania has three horizontal stripes of yellow, green, and red.

Lithuania

Population: 2,794,700

Region: Europe

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

Russian Federation

Population: 144,104,080

Region: Europe

Capital: Moscow