[vchynarov]

What? "America plays the proxy war game too. How much of ISIS armament is of American origin?". America's proxy war involvement is well known, but you picked the most ridiculous conflict that has nothing to do with this. Your argument is ISIS equipment being American. What? That's because equipment given to Iraqis being captured, a very well documented problem. Your implication is the most ridiculous thing I have read in this thread so far.

[elektromekatron]

Creating a power vacuum with a load of weapon caches left behind and hastily trained folk guarding them, does have a pretty predictable outcome.

[vchynarov]

This is a slipper slope if I've ever seen one. Aid to Syrian rebels is already known, one of the parties to which a proxy war might be a somewhat reasonable assumption. However, given the long involvement of the US in Iraq, this is a very far-fetched conspiracy theory to say the least.

[throwawayaway]

You may want to read this article:

http://www.nytimes.com/2012/06/21/world/middleeast/cia-said-...

A lot of these guys ended up in ISIS, it would be foolish to assume otherwise. If you view America's foreign policy aim as maintaining an unstable middle east, then it's not a slippery slope argument.

[elektromekatron]

Is also possibly an idiot-trap on a grand scale. If you have a widely dispersed enemy, leave some treats in an area that can be encircled.