Obama met with Japanese Prime Minister Shinzo Abe on the sidelines of an economic summit.
Obama says they talked about where the two countries can deepen their cooperation. He describes their alliance as "one of the linchpins for our security as well as Japan's."
Obama notes the US is realigning its military forces in the region, including the relocation of Marines from Okinawa to Guam, lessening the base's impact on local communities.