Leaders of the US and North Korea will meet by May

According to South Korea's National Security Office head Chung Eui-yong, Kim pledged that North Korea will refrain from any further nuclear or missile test.

This is the result after the meeting between North Korean leader, Kim Jong Un, and the South Korean delegation on Monday, after both sides held a two-day meeting in Pyongyang.

The latest developments in relations between the US, South Korea  and North Korea are seen as positive signals after a year of intense tension over North Korea's nuclear and missile programs.