The newly developed high-thrust engine will help the country achieve world-class satellite launch capability, according to the country's official media service KCNA.
In a statement, leader Kim Jong-un called the test "historic" and added the whole world would "soon witness what eventful significance the great victory won today carries". "And I think makes it less likely that we'll get the type of cooperation from South Korea or China because they want to understand what our policy is".
Kim Jong-Un attended the March 18 test at the Sohae launch site, according KCNA, which said the test was meant to confirm the "new type" of engine's thrust power and gauge the reliability of its control system and structural safety. It also followed the words of U.S. Secretary of State Rex Tillerson, who, while speaking during a visit to Japan on Thursday (March 16), assessed the North Korea de-nuclearization efforts of the past two decades as "failed".
The United States should be prepared for a pre-emptive strike on North Korea as the communist nation is getting closer to perfecting capabilities to deliver a nuclear missile to the USA, a House lawmaker said Sunday.
When asked about the possibility of using military force to combat the threat from North Korea, Mr Tillerson told a news conference in South Korea's capital Seoul: "All of the options are on the table". They have also discussed about the common interests of the United States and China. "We are exploring a new range of diplomatic, security, economic measures".
There was no mention of contentious issues like North Korea's missile and nuclear programs or self-ruled Taiwan, which China claims as its own, in the meeting which was held at the Great Hall of the People.
North Korea's watchdog, 38 North, said the deeper the tunnel goes beneath Mount Mantap, the bigger the blast which can be contained there during testing.