As reported by Yonhap, North Korea can conduct nuclear tests in a short time after the order of Kim Jong Un. In addition, the armed forces of South Korea, in conjunction with the US military, are constantly monitoring the nuclear facilities of the DPRK.
At present, the DPRK is in the final stage of preparation for nuclear tests. At the same time, she can try her hand at the end of March.
Recall, as previously reported, "URA-Inform," the Ministry of Foreign Affairs of the DPRK temporarily banned the departure of citizens to Malaysia. This decision of the North Korean government is explained by the desire to ensure the safety of diplomats and the population of the DPRK.