From
this site:
Obama accused Bush and McCain of failing to grasp that “the central front in the war on terror is not in Iraq, and it never was—the central front is in Afghanistan and Pakistan, where the terrorists who hit us on 9/11 are still plotting attacks seven years later.”
The Democratic presidential candidate said that his own strategy would include “responsibly removing our combat brigades” from Iraq and redeploying US forces “to finish the job in Afghanistan.” This would involve, he added, “more focus on eliminating the Taliban and Al Qaeda sanctuary along the Pakistan border.”
Referring to the Bush administration’s decision to make a limited redeployment and, implicitly, to the recent US strikes across the Pakistani border, Obama said, “I am glad that the president is moving in the direction of the policy that I have advocated for years.”
However I don't recognize the source, and the Pakistani attacks hasn't become a major issue yet. I'd predict that Obama is going to wait a little while longer and see how people react to the news before taking a definite stand on the issue. This is also an issue where Biden could influence the direction he takes - the issue might even be deferred to Biden so as to not risk Obama's image this late in the campaign.
I'd predict that if Obama does choose to go ahead and endorse ground strikes in Pakistan, he'll take advantage of the animosity caused by Bush's unilateral strikes to emphasize the importance of bringing people to the table, and say that it's important that we work with the government of Pakistan. That way he distances himself from Bush and Bush's reputation for acting unilaterally, and also scores points on the "experience" front. It's also a pretty safe thing to say, since he doesn't have any commitment to live up to those words until well after the current conflict has mutated into something completely different, whatever that might be, and he scores points with Pakistan for at least appearing to be on their side in this issue against Bush.
It might even help him in the Muslim-name department, too, since he would be endorsing attacks against/within a Muslim country. (That seems vaguely wrong, but it is politics)
As for McCain:
http://www.youtube.com/watch?v=Dkt0LO3CE3ISomewhat slanted, but it does touch upon the issue (OK, I just remembered it because I thought it was funny). I don't think McCain has a definite stance yet, either. McCain seems to be taking a back seat to Palin recently, and letting the media take her in, which gives him the opportunity to also wait and see what becomes of the Pakistan strikes issue. The news has only really broken today and it's not really that big of an issue, so there's no sense in either candidate taking a strong stance on the issue that might hurt them in the long run.
EDIT: When I say "it's not really that big of an issue", I mean as an election thing, not as an impact-on-the-world thing.