Where in the world?
The flag of Tonga has a red field. A white rectangle bearing a red Greek cross is superimposed in the canton.

Kingdom of Tonga

Native name: TongaPopulation: 100,179Region: OceaniaSub region: PolynesiaCapital: Nuku'alofaTop level domain: .toCurrencies: Tongan paʻangaLanguages: English, Tongan