** FILE ** U.S. Secretary of State John Kerry speaks during his lecture to students at Tokyo Institute of Technology in Tokyo, Monday, April 15, 2013. (AP Photo/Junji Kurokawa, Pool)

Photo by: Junji Kurokawa

** FILE ** U.S. Secretary of State John Kerry speaks during his lecture to students at Tokyo Institute of Technology in Tokyo, Monday, April 15, 2013. (AP Photo/Junji Kurokawa, Pool)