U.S.-Pakistan relations are in crisis. For Washington, Osama bin Laden's safe haven in Abbottabad raises questions about Pakistan's complicity and/or incompetence. For Islamabad, bin Laden's killing …

Pakistan's leadership transitions over the course of 2013 will complicate, perhaps even disrupt, the already tenuous U.S.-Pakistan relationship. As in the past, Washington may be tempted to lend supp…