North Korea has promised to end all its atomic and missile tests - but experts warned last night that the dramatic pledge may mean the rogue state has already perfected its nuclear weapons system.
The Russian Foreign Ministry said it was pleased to note that the situation on the peninsula was developing in a positive manner in accordance with the political settlement proposed by Russia and China.
He said he has to wait and see what Pyongyang will say in its upcoming summits with Seoul and Washington.
He is also expected to meet US President Donald Trump in the near future.
The decision was announced by Kim at the Third Plenary Meeting of the Seventh Central Committee of the ruling Workers' Party of Korea (WPK) which took place here on Friday, reported the Korean Central News Agency.More news: Siddaramaiah to contest from 2 seats in Karnataka assembly polls 2018
Japanese Prime Minister Shinzo Abe offered a more guarded reaction.
Stating that the northern test area has completed its mission, Kim said that under the proven condition of complete nuclear weapons, the country no longer needs any nuclear tests, mid-range and intercontinental ballistic rocket tests, reported KCNA.
Kono said the North's pledge will not lead to any easing of sanctions against the country, as the worldwide community wants to see real action.
Although Pyongyang said it would abolish its nuclear test site, there was no indication it was planning to get rid of its existing weapons.More news: Antonio Conte: 'Top four still a possibility for Chelsea'
"If I think that it's a meeting that is not going to be fruitful, we're not going to go", Mr Trump said. Both countries have been pushing Pyongyang to denuclearise.
U.N. Secretary General Antonio Guterres told reporters in Sweden that he was optimistic about North Korea's decision, saying that "the path is open for the peaceful denuclearization of the Korean Peninsula".
The thawing of relations between the DPRK and the ROK started with Kim's New Year speech, where he said that his country was "a peace-loving and responsible nuclear power", and called for lower military tension and improved ties with the ROK.
In an earlier statement released by his office, Guterres wished the two Koreas ahead of their April 27 summit "every success in their courageous and important task of resuming honest dialogue leading to sustainable peace on the Korean Peninsula".More news: Coli warning, asks everyone to stop eating romaine lettuce