Wally

Look, I say it you as a test-pilot, lest one calls Russia made jet TU-154 but it very simple and reliable airplane. That’s why I think that just missile attack or explosion on the board could be the reason of such shambles of hull. I’m sure that Iran officials will not get complete and reliable information by found flight recorders what desolated. But everything is lying exteriorly either terrorist on the board or jet was attacked from the ground!
In light of present situation around Iran nuclear program the conclusion is forced upon you - American Special Services has a finger in the pie!