I am generally supportive of President Obama's renewed emphasis on diplomacy. But, I also must admit to some skepticism about what, in the end, more "diplomacy" will be able to accomplish. For years, a core assumption of the critics (myself included) of the Bush administration and the neocons has been that contemporary diplomatic institutions and practices offer a more refined set of instruments to deal with the complexities of contemporary global challenges. Maybe. But, then again, maybe not. Several recent studies and stories reveal significant problems with the institutions of American...