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 program.
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 programs in defiance of U.N. Security Council sanctions.
The Rodong Sinmun, the official newspaper of the North's ruling Workers' Party, did not mince its words.