The foreign ministers of the United States, Japan, and South Korea have promised to tackle the actions of the Democratic People's Republic of Korea, and its recent nuclear tests.

CCTV's reporter filed has the details from the New York, where the ministers met on the sidelines of the United Nations General Assembly.

For the U.S., Japan and Republic of Korea, the issue of the DPRK's continued nuclear testing is demanding their attention.

Meeting in New York, U.S. Secretary of State John Kerry said the three countries have condemned what he called the "provocative, reckless behavior of the DPRK.

Earlier this month, Pyongyang carried out its fifth nuclear test - its most powerful to date, and its second this year. It has also carried out a series of ballistic missile tests throughout 2016.

Kerry, along with the Republic of Korea's Foreign Minister Yun Byung-se and Japan's Foreign Minister Fumio Kishida - are in New York for the United Nations General Assembly.

They're using the opportunity to discuss serious issues face-to-face. The three nations in this trilateral meeting want the world to work harder at bringing the DPRK in step with a planned de-nuclearization. And they want the U.N. Security Council to impose tougher measures against Pyongyang.

Back in March, the Council approved what the U.S. said were the "strongest" sanctions in "more than two decades" on the DPRK. But the three countries feel extra measures are now needed.

However, in the past China and Russia, two of the permanent members of the Security Council, have been more reluctant to impose sanctions.

The U.S., Japan and the Republic of Korea all say they would be willing to engage in negotiations with the DPRK. But to do that, they say Pyongyang must first freeze all testing and production of nuclear material. 

This meeting of the three countries will help to reinforce the commitment to stop the DPRK's nuclear program, and keep up international pressure.