In foreign affairs, the central challenge now facing President Barack Obama is how to regain some of the ground lost in recent years in shaping U.S. national security policy. Historically and politically, in America’s system of separation of powers, it is the president who has the greatest leeway for decisive action in foreign affairs. He is viewed by the country as responsible for Americans’ safety in an increasingly turbulent world. He is seen as the ultimate definer of the goals that the United States should pursue through its diplomacy, economic leverage, and, if need be, military compulsion. And the world at large sees him — for better or for worse — as the authentic voice of America.

Read Here – Foreign Policy