North Korean leader Kim Jong Un watched the ground jet test of a Korean-style high-thrust engine newly developed by the Academy of the National Defence Science in this undated picture provided by KCNA in Pyongyang on March 19, 2017. KCNA/via Reuters
WASHINGTON (Reuters) - North Korea has carried out another test of a rocket engine that U.S. officials believe could be part of its programme to develop an intercontinental ballistic missile, officials told Reuters on Monday.
The latest test follows one earlier this month, and is another sign of Pyongyang's advancing weapons programme. It comes amid mounting U.S. concerns about additional missile and nuclear tests, potentially in the near future.
