President Obama is correct that American troops should not remain in Afghanistan without a status of forces agreement. He will need to be far more committed to achieving that agreement than he was when Washington sought to negotiate a SOFA with Iraq. It is said that Baghdad now regrets that it did not agree to a SOFA—the country is once again teetering on the brink of ethnic conflict—and is advising Kabul not to make the same mistake. Karzai’s mercurial nature may render it difficult to achieve a SOFA, however, unless he is pressed by Obama on a sustained basis. And it is not at all clear whether the administration really wants to keep any troops in Afghanistan at all.