Dancers and drummers at Souq Waqif سوق واقف

A troupe of dancers and drummers from an area of Saudi Arabia straddling the border with Yemen. The performance was in Souq Waqif in Doha, Qatar. The troupe members all wear a dagger called a jambia in Yemen. The two flags being held are those of Qatar (maroon and white) and Saudi Arabia (green). I think the dance is called anDar (please correct me if I'm wrong).