U.S. President Barack Obama. Pic: AP.

THE HAGUE, Netherlands (AP) — President Barack Obama says the U.S. commitment to Japan’s and South Korea’s security is unwavering and that a nuclear-armed North Korea is unacceptable.

Obama commented at the top of a three-way meeting with Japanese Prime Minister Shinzo Abe (shin-zoh ah-bay) and South Korean President Park Geun-Hye.

It’s the first meeting between Abe and Park since they took office more than a year ago. Frosty relations between the two American allies have worried the U.S.

Obama says all three countries are concerned about North Korea’s nuclear weapons program. He says their cooperation has sent a strong signal that North Korea’s threats and provocations will be answered with a unified response. Obama says they’ll discuss ways to deepen their coordination.

The leaders met in the Netherlands following a summit on nuclear security.