Quote Originally Posted by Paratrooper View Post
Lets say We "stay out of it"

A) ISIS takes over Iraq and sets up a Caliphate and now uses the economy of Iraq to wage global Jihad
B) Iran jumps in wipes out the Sunni opposition and Iraq becomes essentially an expanded Iran

Either way there is going to be massive ethnic cleansing.

"The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing."
It would be best to use a combination of diplomatic and economic carrots, targeted military strikes, and intelligence-gathering ops to ensure that neither side wins outright given domestic opposition to an occupation of any kind.