Of course, every strategic choice has its trade-offs. At Tora Bora, the local troops entered into surrender negotiations that let enemy fighters escape. Some critics suggest that the United States, instead of relying on Pakistani forces to catch al-Qaida escaping to Pakistan, should have done that job itself. But putting U.S. forces into Pakistan could have had the significant cost of destabilizing the relatively moderate government of President Pervez Musharraf.

    Kerry warned about exactly this possibility. As the Afghan campaign got under way, The Boston Globe reported: "Kerry, the son of a foreign diplomat, said the greater challenge is managing Muslim unrest in neighboring Pakistan. ... 'My judgment is people who think that Pakistan itself will be easily manageable are really misjudging the public sentiment there,' Kerry said."

    At the time, Kerry even weighed in sympathetically on the battle of Tora Bora. On Jan. 20, 2002, Kerry said on CNN: "I do think some people have asked some questions about how that particular component of the mission sort of played out. But the fact is that it is a difficult place. He is elusive. I think they are doing the maximum amount right now possible to try to track him down."

    Kerry now says there's no way he would have missed the opportunity the United States had at Tora Bora. What he said three years ago argues otherwise. This controversy is only more evidence that what the senator will never miss is an opportunity to be opportunistic.