Of course as all UFO sightings this is up for speculation but in my opinion this is one of the best recorded UFOs that exist. You can even see what appear to be the occupants of the craft. If those are actual Grey Aliens is up for discussion but the shape of their heads appears like the classical grey alien head.

Complete Footage: https://youtu.be/lSYJvgI-XKw

A little analysis on the footage where you can see better looking images of the occupants (although still blurry): https://youtu.be/ScPrgZQ2hvk

More detailed analysis: http://turkeyufocase.blogspot.de/2011/04/turkey-ufo-sightings-were-series-of_16.html?m=1