Where in the world?
The flag of Botswana has a light blue field with a white-edged black horizontal band across its center.

Botswana

Native Name: Republic of Botswana
Population: 2,351,625
Region: Africa
Sub Region: Southern Africa
Capital: Gaborone
Top Level Domain: .bw
Currencies: Botswana pula
Languages: English
Border Countries: NAMZAFZMBZWE