Japanese Prime Minister Shinzo Abe hailed an "historic" success as he and US President Barack Obama signed an agreement on security issues and made progress in bilateral trade talks.
The two countries issued a joint statement saying they oppose attempts to assert territorial or maritime claims by coercion and specifying that their bilateral security treaty covers Japanese islands claimed by China.
They failed to reach a bilateral trade deal that is key to both leaders' agendas. But Abe said they achieved a "key milestone" by making progress on the talks, which they said will inject "fresh momentum" into attempts to reach a 12-nation Trans-Pacific Partnership pact.
More top news
Irish police have seized £32 million worth of cannabis hidden in farm machinery on board a ship docking in Dublin.
Revellers reportedly jumped from the upper level of the lakeside venue to escape the flames.
A bomb blast reportedly struck a refugee camp in Syria near the border with Jordan causing injuries and deaths.