Giant Bomb in Pakistan

Blew up the Islamabad Marriot and killed over forty people. This kind of thing is obviously distressing. But it strikes me that if Pakistan-based militant groups start turning to these kind of attacks, rather than to doing stuff in Afghanistan or the remote frontier regions, that the bulk of Pakistani opinion will almost certainly turn in favor of harsher measures against them which could, ultimately, improve the prospects for some U.S. policies.