US President Donald Trump has issued fresh warnings to North Korea, saying his previous warnings may have been too soft.
Trump says Pyongyang should be extremely nervous if it is considering an invasion against the United States or its allies.
Trump also urged China to step up its efforts to rein in Pyongyang and its nuclear program.
The fiery rhetoric sent US stocks to their biggest declines in nearly three months with the Dow Jones Industrial Average falling zero point 9 percent and the S and P Index shedding one point 45 percent.
Donald Trump had earlier threatened that Pyongyang would face fire and fury if it pressed ahead with its nuclear and missile programs.
North Korea has dismissed Trump’s threats and announced detailed plans to target areas near the US Pacific territory of Guam.