The national flag of Burundi was adopted on June 28, 1967. The green color symbolizes hope, white for purity, and red for the struggle of independence. The flag has a basic white cross that divides the field into four areas, two green, and two red. In the center, is a circle that that contains three stars that stand for the three major ethnic groups of Burundi: the Hutu, the Twa and the Tutsi. The three stars also stand for the three elements of the national motto: Unity, Work and Progress.