Where in the world?
The flag of Morocco has a red field with a green pentagram in the center.

Morocco

المغرب

Population: 36,910,558

Region: Africa

Subregion: Northern Africa

Capital: Rabat

Top Level Domain: .ma

Currencies: Moroccan dirham

Border countries

The flag of Algeria has two vertical bands of green and white, with a red crescent and star centered over the boundary between the colors.

Algeria

Population: 44,700,000

Region: Africa

Capital: Algiers
The flag of Western Sahara has a horizontal tricolor of black, white, and green with a red triangle on the hoist side.

Western Sahara

Population: 510,713

Region: Africa

Capital: El Aaiún
The flag of Spain has three horizontal stripes of red, yellow, and red with the national coat of arms on the yellow stripe.

Spain

Population: 47,351,567

Region: Europe

Capital: Madrid