President Donald Trump warned North Korea again over its plans to fire weapons. The war of words between Mr Trump and North Korea is getting worse. Countries in the region are worried that the war of words could turn into a real war. Tensions increased a lot this week when North Korea said it had nuclear warheads small enough to fit inside its missiles. Trump then warned: "North Korea best not make any more threats….They will be met with fire and fury like the world has never seen." North Korea responded by promising to fire missiles off the coast of the US territory of Guam.
North Korea said Trump's words were "nonsense". Mr Trump then warned the North Koreans again. He said his "fire and fury" statement "wasn't tough enough" and that North Korea should "be very, very nervous". He said China could do more to reduce tensions. The USA's Arms Control Association said Mr Trump should stop using such strong words to avoid a military conflict. It said: "Recent [talk] from Trump is a dangerous and ineffective strategy to halt North Korea's nuclear development and could trigger a military conflict that would not be in the U.S. interest."