Federated States of Micronesia
The Indian flag has a ashoka chakra [a wheel] in the center of it symbolizing the circle of life and death.
white with a red circle in the center?
It could be ringworm.
sap
A blue field with 12 five-pointed gold stars arranged in a circle in the center; blue represents the sky of the Western world, the stars are the peoples of Europe in a circle, a symbol of unity; the number of stars is fixed.
3rd Army - commanded by Gen George Patton.Patch is a BLUE circle with a RED border and a WHITE "A". 6th Army was a GREEN circle with a WHITE 6-pointed Star with RED Trim and a RED "A" in the center of the star. The A is very prominant. Anti-Aircraft Command was a WHITE circle with BLUE trim and two(2) RED "A" in the center. Allied Forces HQwas a circle with "AF" in the center.
it depends what kind of flag it is
You hardly mean the Grateful Dead?
The flag of Japan is white with a red circle in the center.
White field with a filled red circle centrally positioned.
White rumps are a sure field sign of the marsh hawk, aka "Harrier".