Matt sounds like he doesn't quite trust Hillary on foreign policy yet agrees that she is probably the best informed and most capable of dealing with the big domestic issues like healthcare and global warming that need the attention of the next president.
Other then on issues like Iraq however, I'm not sure how it helps a candidate to be specific on exactly what they would do with countries like Iran. Until they are elected, making commitments to behave a certain way towards other countries only reduces their options once they're in the White House. While Obama's rhetoric on the subject might sound appealing, there's over a year to go before he or anyone else would be in a position to do anything. Unlike large domestic initiatives and policy debates that play out sometimes over decades, foreign policy is a rather fluid, fast moving set of changing circumstances and power plays. Besides, with parts of the Middle East as unsettled as they are now, telegraphing anything beyond the commitment to end the war just doesn't make a lot of sense.