This is the flag of which country?

The flag of Serbia is a tricolor consisting of three equal horizontal bands, red on the top, blue in the middle, and white on the bottom. The same tricolour, in altering variations, has been used since the 19th century as the flag of the state of Serbia and the Serbian nation. The current form of the flag was officially adopted on 11 November 2010.

The state flag bears the lesser coat of arms, centred vertically and shifted to the hoist side by one-seventh of the flag's length. The flag ratio is 2 to 3 (height/width), with three equal horizontal bands of red, blue and white, each taking one third of the height.