He should approve the additional troops General McChrystal wants.
Now he seems to be having second thoughts. But in one of the most stark warnings a field commander has ever delivered to his president, Gen. Stanley McChrystal has declared that, without a rapid infusion of more troops, the war will "likely result in failure." He is surely frustrated with White House ponderings about whether the US has the "right strategy" in Afghanistan.
As Margaret Thatcher once said to another American president, in another war, this is no time to "go wobbly." President Obama should approve the dispatch of additional troops to Afghanistan that McChrystal is requesting.
Nobody can take lightly the decision to send more young US soldiers into combat. Nobody can guarantee that the outcome will be positive. The terrain in Afghanistan is forbidding. Hamid Karzai's reelected government lacks credibility.