The enemy of my enemy is my friend... until he turns against me.
Arming any muzzie group/country in the middle-east is a dumb azz policy. We can not solve 1300 year old problems in 13 weeks on 13 months by taking sides.
In every instant, whoever we armed have come back to bite us in the azz. Most of the better weapons ISIS has were given by us to Iraq.
I harken back to the days when middle-east dictators loved us and were happy with American oil companies extracting their oil. No one hated us. Until that is we took sides and helped engineer removal of the Shah of Iran, then got involved in Kuwait in a war with Iraq, etc. If we had kept out military out of the middle-east, there would be no 911.
The middle-east may have internal fights between various entities but they are all united by their prophet.