North Korean leader Kim Jong Un said the country has miniaturized nuclear warheads to mount on ballistic missiles and ordered improvements in the power and precision of its arsenal, state media reported on Wednesday.

Kim has called for his military to be prepared to mount pre-emptive attacks against the United States and South Korea and stand ready to use nuclear weapons, stepping up belligerent rhetoric after coming under new U.N. and bilateral sanctions for its nuclear and rocket tests.

U.S. and South Korean troops began large-scale military drills this week, which the North called “nuclear war moves” and threatened to respond with an all-out offensive.

Kim’s comments, released on Wednesday, were his first direct mention of the claim, made repeatedly in state media, to have successfully miniaturized a nuclear warhead, which has been widely questioned and never independently verified.

www.reuters.com