Defense Secretary Ashton B. Carter on Friday urged the newly commissioned officers of the Naval Academy's class of 2016 to prepare to tackle five challenges facing the nation.
He ticked them off: Russian aggression, the rise of China in East Asia, a nuclear-armed North Korea, Iranian meddling in the Middle East and the battle against the self-declared Islamic State.
"The United States doesn't have the luxury of being able to choose among these challenges," Carter said. "We have to do it all."
Carter spoke on a hot, humid day at Navy-Marine Corps Memorial Stadium as the 1,076 graduating midshipmen sat on the field below. Their commencement marks the...