North Korean leader Kim Jong-un sister Kim and Zheng said that this week /A> A protocol will exacerbate the unsafe situation.

The North Korean Society quoted Kim and Zheng on Saturday (April 29) that North Korea was convinced that it must further improve the "nuclear war deterrent".

In South Korea's President Yin Xiyue's weekly interview Under the tension of growth missiles and bombs, the United States promised to let South Korea understand the nuclear plan for any conflict with North Korea.

Golden and Zheng's statement is the first comments from North Korea's results of the summit, and stated that Pyongyang will continue to show military and weapon development.