I found this EthAF Su-25 at Wings Palette. I believe the Ethiopians mark the upper port wing surface, and the underside starboard wing surface, with their national roundel. http://wp.scn.ru/en/ww4/a/43/57/0/1
Been there!! That's the airport at Laayoune. The hangars in the upper left side of the first pic were the hangars of the Spanish Air Force when this place was known as El Aaiun, the capital of the former Spanish Sahara.