After calling North Korea leader Kim Jong-un 'Rocket Man' in his speech and directly threatening to 'totally destroy' North Korea, the United States President Donald Trump on Saturday again warned North Korea, saying that its Foreign Minister Ri Yong Ho and leader Kim Jong-un 'won't be around much longer', if Ri echoed the thoughts of 'Little Rocket Man'. Trump's tweet came after North Korea's Foreign Minister told the United Nations General Assembly earlier on Saturday that targeting the U.S. mainland with its rockets was inevitable after 'Mr Evil President' Trump called Pyongyang's leader 'rocket man'. "Just heard Foreign Minister of North Korea speak at U.N. If he echoes thoughts of Little Rocket Man, they won't be around much longer!" Trump tweeted.