Qatar

maroon with a broad white serrated band (nine white points) on the hoist side; maroon represents the blood shed in Qatari wars, white stands for peace; the nine-pointed serrated edge signifies Qatar as the ninth member of the "reconciled emirates" in the wake of the Qatari-British treaty of 1916

the other eight emirates are the seven that compose the UAE and Bahrain; according to some sources, the dominant color was formerly red, but this darkened to maroon upon exposure to the sun and the new shade was eventually adopted