Iranian general was killed in Baghdad by US drone, retaliating rocket strike from Iran to American bases in Iraq followed. Few hours later civilian airliner was shot down over Tehran.
Rebels in Donbas (rather unmarked Russian forces) shot down some Ukrainian planes including transport flying at 18.000 feet which couldn't be achieved with manpads and few days the MH17 was shot down with Buk.
Once the rockets fly in the area it should be a trigger to suspend civilian traffic in the area. But who will be in charge? For how long?