Yes, I agree. This is consequence of US Administration’s decision regarding Iraq. I would add also other states which withdrew their armies from Iraq prematurely. What’s more nobody seems to even think (in Europe or elsewhere beyond USA) about possible intervention to destroy ISIS simultaneously in the Middle East and North Africa...
To destroy ISIS would require a coordinated, specialized military approach that basically requires massive amounts of men and I wonder what it would take to get the Chinese to invade and exterminate ISIS.
This atrocity took place in Yemen where this Indian priest was kidnapped in Aden after nuns were murdered.