Where in the world?
The flag of Lebanon has two horizontal red stripes on the top and bottom, with a white stripe in the middle featuring a green cedar tree.

Lebanon

لبنان

Population: 6,825,442

Region: Asia

Subregion: Western Asia

Capital: Beirut

Top Level Domain: .lb

Currencies: Lebanese pound

Border countries

The flag of Israel has a blue Star of David between two horizontal blue stripes on a white field.

Israel

Population: 9,216,900

Region: Asia

Capital: Jerusalem
The flag of Syria has three horizontal stripes of red, white, and black with two green stars in the center of the white stripe.

Syrian Arab Republic

Population: 17,500,657

Region: Asia

Capital: Damascus