One can speculate. Sadly, in this case, facts are harder to come by.
This is unbelievable but unfortunately I believe it.
“Why hasn’t President Obama unleashed U.S. Air Power (close-air support) to assist Iraq’s democratically-elected government from being conquered by ISIS (Islamic State in Iraq and the Levant)?”
One doesn’t need to speculate about missiles.
Just look at his actions since the “arab spring” began. He has always and everywhere supported the most radical, murdering, terrorist faction to be seen.
He’s not unleashing fiery death upon their heads because he wants them to win.