Just nine months after taking office, the Obama administration has already earned a failing grade on matters of nuclear policy.  In the span of a single week in September, the Obama administration abandoned long-standing plans to deploy a third missile defense site in Europe and moved to cut drastically the U.S. nuclear weapons arsenal to dangerously low levels.  The Guardian reported in late September that President Obama has “rejected” the Pentagon’s initial draft of the 2009 Nuclear Posture Review, the congressionally-mandated review of the nation’s nuclear strategy.   Radical cuts in America’s nuclear arsenal will have serious ramifications for U.S. national security.  Such cuts will reduce the credibility of American power, weaken our bargaining position, and give friends…