U.N. Secretary General Antonio Guterres addressed at the  73rd session of the UN General Assembly. (Photo: Xinhua/VNA)

The UN chief added that progress is also essential between Washington and Pyongyang.

In an announcement, the UN Secretary-General said: "The commitments reflected in the joint statement include important military confidence-building measures and a commitment by the DPRK to dismantle missile engine testing infrastructure in the presence of experts from related countries".

"Now it is time for concrete action,” he added.

Mr. Guterres called “for unity of the international community to support the parties in their endeavours towards sustainable peace, security and complete and verifiable denuclearization on the Korean Peninsula, in accordance with relevant Security Council Resolutions".

He also reiterated the commitment and readiness of the UN system “to further assist the parties in any way they deem appropriate”. 

RoK President Moon Jae-in and DPRK leader Kim Jong-un signed a broad agreement on September 19th in Pyongyang that both said would usher in a new era of peace on the Korean peninsula.

President Moon and his spouse Kim Jung-sook on September 18th flew to Pyongyang, the DPRK, for their third meeting with leader Kim Jong-un.

Mr. Moon is only the third RoK leader to visit the DPRK's capital for a meeting between the two countries since the end of the Second World War.

It is the third time the two leaders have met this year, having previously talks in the Truce Village of Panmunjom./.

Compiled by BTA