The Latest: Obama: World not yet free of nuclear weapons

Secretary of State John Kerry meets with Nigerian President Muhammadu Buhari at the Nuclear Security Summit, Thursday, March 31, 2016, at the Walter E. Washington Convention Center in Washington. (AP Photo/Andrew Harnik) Secretary of State John Kerry meets with Nigerian President Muhammadu Buhari at the Nuclear Security Summit, Thursday, March 31, 2016, at the Walter E. Washington Convention Center in Washington. (AP Photo/Andrew Harnik)

By Associated Press March 31, 2016 2 min read

WASHINGTON (AP) – The Latest on the Nuclear Security Summit convened by President Barack Obama:

10:25 a.m.

President Barack Obama says more must be done to rid the world of nuclear weapons.

He’s calling on Russia to further reduce its nuclear weapons stockpile. He says the U.S. and its allies will continue standing up to North Korea over its continued nuclear tests and missile launches.

Obama says world security also depends on the U.S. and other nations adopting a ban on all nuclear explosions and concluding a new treaty to end production of the material needed for nuclear weapons.