Domestic Politics

The U.S. withdrawal from Afghanistan is driven largely by domestic politics. That is a privilege of a country that is both rich and safe. But the United States has security interests in Afghanistan and Pakistan that, despite its best attempts, it will not be able to ignore.

The United States can no longer afford a world-spanning foreign policy. Retrenchment -- cutting military spending, redefining foreign priorities, and shifting more of the defense burden to allies -- is the only sensible course. Luckily, that does not have to spell instability abroad. History shows that pausing to recharge national batteries can renew a dominant power’s international legitimacy.

The recent deal over the debt ceiling guarantees that the U.S. government will reduce its spending on foreign policy, which will force America to scale down its ambitions abroad.

The United States' fiscal future depends on whether the country can limit health-care costs. Obama's reforms were a major step in the right direction, argues the former White House budget director. But to finish the job, the U.S. medical system must evolve so that it emphasizes evidence and pursues quality rather than quantity.