 American leadership in the world is indeed central, important, the world remains so, even though the United States may not be the same dominant power that was 50 years ago. Nevertheless, our role in the world is vitally important for sustaining the system of global governance that has been created over the last 75 years. And the other part of it, which is essential, is that that leadership is best sustained when you have bipartisan understanding of what that role should be and support for what we're doing in the rest of the world.