President Obama will be the first sitting U.S. president to visit the Japanese city since America dropped an atomic bomb on Hiroshima and Nagasaki at the end of 1945.
Forty years ago, North Korean agents abducted 13-year-old Megumi Yokota from Japan. Pyongyang claimed in 2002 that she was dead. But her family says she's alive. They're seeking U.S. help to find her.
Two major quakes hit southern Japan barely a day apart, killing at least 41 people and flattening at least 90 homes. Now, rescue crews are searching for survivors and assessing the damage.
Just over 24 hours after strong earthquakes hit the Kumamoto area, an even bigger temblor of magnitude 7.0 struck the same area. Thursday's quakes killed at least nine people.
The White House hasn't announced any such plans. But Obama will be in Japan next month and a visit would be a grand symbolic gesture in keeping with his emphasis on nuclear nonproliferation.
President Obama said Donald Trump's statements on nuclear issues show he "doesn't know much about foreign policy, or nuclear policy, or the Korean Peninsula, or the world generally."
When the earthquake, tsunami and nuclear crisis hit Japan in 2011, U.S. troops delivered aid in Operation Tomodachi, Japanese for "friends." Another Tomodachi program brings Japanese kids to the U.S.