I have been starring at this picture for awhile, and all i can get is a JU-52 (for the larger of the three aircraft). However, according to http://www.preservedaxisaircraft.com there are no JU-52 at that location.
The trailing edge don’t seem to taper enough for a JU-52, but that could be due to the angle (standing nose high and seen directly from above).
The wingspan is around 90′
It could be a distorted C-47, but I don’t think the wings are right and the fuselage seem to square.
Does anyone have another guess?
There is Spitfire to the south to gauge the size of the large one.

I would go with the DC.3, Spit and Provost and to the North is another base with what I think are a couple of Mig 19’s (Shenyang). The Yemen is quite an interesting place too.
John