President Obama's top advisor on arms control and weapons of mass destruction is leaving the administration and taking a post at Harvard.
Gary Samore has been appointed head of the Belfer Center for Science and International Affairs, the center announced.
Since 2009, he has been the principal adviser to Obama on nonproliferation and has coordinated strategy and programs on everything from stopping Iran's development of nuclear weapons to the securing of nuclear materials around the world. Samore was also the point person on Obama's 2012 Nuclear Security Summit in Korea.
The White House did not respond to a message seeking more information about his departure. (See update below.)
1. This makes it sound mysterious, when it's really not
People rarely stay at the White House a second term. When you get a chance to take a challenging job as head of a center in your area of expertise, at a prestigious institution, which you might sustain for the rest of your working career ... you don't stay in a job with many headaches that will disappear in four years.