N.Korea warns of "super-mighty preemptive strike" as U.S. plans next move

By Ju-min ParkSEOUL (Reuters) - North Korean state media warned the United States of a "super-mighty preemptive strike" after U.S. Secretary of State Rex Tillerson said the United States was looking at ways to bring pressure to bear on North Korea over its nuclear programme.U.S. President Donald Trump has taken a hard line with North Korean leader Kim Jong Un, who has rebuffed admonitions from sole major ally China and proceeded with nuclear and missile programmes in defiance of U.N. Security Co