He was against it before he was for it.
Pretty clear how the Huffington Post feels about it:
“U.S. Staying In Afghanistan Through End Of 2017... Thousands Of Troops... Obama Handing Off Conflict To Successor... Previously Promised To End It In 2014... 14 Years Of War... UN: Taliban’s Reach Widest Since 2001... Afghanistan Not Mentioned In Dem Debate...”
http://www.huffingtonpost.com/
He's consumed by political image (and his love of Islam). He thought that by removing US presence from Afghanistan he'd get a 3-fer:
* Bringing the troops home, solving the Bush misadventure
* Weakening US leverage against the potential Caliphate that is forming
* Leaving any blowback as a mess to be blamed upon a future GOP administration
Now that it looks like a collapse would occur more rapidly and be blamed on him, he extends the mission. That's how I see it.
Putin wants the United States to go broke in that hellhole? Just like the Russians did...
I’m sickened we’re going to be throwing US lives and treasure down that rathole. Nothing there for us. Absolutely nothing.