U.S. President Donald Trump sent a new warning to North Korea as two American supersonic bombers staged a show of force during a training over South Korea on Tuesday. Newsweek has contacted the North Korean Embassy in China for comment by email.

North Korea has threatened to take “powerful” measures in response to the US flying long-range bombers over South Korea. The US flew two B-1B bombers on Tuesday during an aerial drill accompanied by American and South Korean fighter jets, which Seoul framed as a direct response to the escalating threat of North Korea’s growing nuclear ambitions.