From Hillary's perspective, the point is to get Obama to admit a mistake and thus set the tone from this point forward that he her junior on all such heady international matters.
From the GOP perspective the point is to make all Dems seem reckless children on the world stage.
The unspoken truth here, I suspect, is that Obama has struck on the central folly of our post-9/11 counter-terrorism defense policy -- strike hard where they aren't and go easy where they are. I think everyone can see this. But Obama got there first. So they need to attack him for saying it.