Object captured by camera over Abu Dhabi

I am a member of the United States Air Force stationed in southwest Asia for the past 2 months. While sight seeing downtown in Abu Dhabi, I took a photograph of a local building with interesting architecture. Upon review of the photo (to make sure it was all in focus) I noticed an odd saucer shaped object  hovering to the buildings immediate left, and when I looked up to see it in person, it was no where in sight.
There were no airplanes flying within the immediate area that I could see, and the total time between taking and reviewing the photo to looking back at the skyline was no more than 15 to 30 seconds. Because the craft is in such poor focus (compared to the buildings in the photograph) I believe it was much larger than it appears and in motion at the time the photo was taken. This assumption is also based on the fact that I do not recall it being in the frame as the picture was being taken.
I know there are a myriad of plausible and reasonable explanations for this photograph, but also believe that it stands to attest to the slight possibility that it was a genuine UFO sighting.