In 2009, Obama told midshipmen to be on guard against "conventional and unconventional" threats.
Commencement, when academy graduates receive their commissions as ensigns in the Navy or second lieutenants in the Marine Corps, is scheduled for May 24.
Obama gave his first service-academy commencement speech in Annapolis in 2009 -- more than a year before U.S. combat operations ended in Iraq. He drew applause when he said that "as Americans, we reject the false choice between our security and our ideals. We can and we must and we will protect both."
Last year, then-Defense Secretary Leon E. Panetta told members of the academy Class of 2012 that building U.S. strength in the Asia-Pacific region would be for "one of the key projects" of their generation.
In 2011, then-Defense Secretary Robert M. Gates spoke to the graduating midshipmen. Vice President Joe Biden spoke in 2010.
"The president is honored to deliver the commencement address to the graduates of the United States Naval Academy this spring," White House spokesman Keith Maley said in a statement. "The Naval Academy educates some of the finest leaders to serve the nation, and provides its graduating midshipmen with extraordinary skills and character to lead the world’s greatest Navy and Marine Corps."
Source : http://articles.baltimoresun.com/2013-03-04/news/bal-obama-to-speak-at-us-naval-academy-commencement-20130304_1_commencement-midshipmen-academy-superintendent-vice-adm