This August, the United Nations Security Council authorized a major force -- more than 22,000 strong -- to deploy to Darfur. Under the Security Council's mandate, the U.N. troops would take over Darfur's defense from the undersized and ill-equipped African Union force, which has been unable to prevent attacks on civilian enclaves. Eventually, the United Nations Mission in Sudan was supposed to oversee a political settlement and establish order. The Security Council resolution mandated that the transition to the U.N. force begin by October, and conclude no later than December 31. Darfuris, however, will have to place their hopes on hold. As of publication, not one blue helmet has set foot in Darfur. Indeed, the transition to a U.N. force has not even begun. The dilemma is basically this: U.N. peacekeepers cannot deploy to Darfur without Khartoum's consent, which so far, they do not have. That has made the countries that supply the bulk of the peacekeepers around the world -- Pakistan,...