Washington, Jan 8: US Ambassador to the UN Nikki Haley said that President Dold Trump’s “nuclear button” tweet warning Kim Jong-un about America’s nuclear capabilities helps global security because it keeps the North Korean leader “on his toes”, the media reported.”We want to always remind them we can destroy you, too, so be very cautious and careful with your words and what you do,” Haley told ABC News on Sunday.”He can’t sit there and imply that he’s going to destroy the US without us reminding him of the facts and the reality that if you go there it’s not us that’s going to be destroyed, it’s you,” Haley said.”I think that he (Trump) always has to keep Kim on his toes.”