Nikki Haley, President Donald Trump's ambassador to the United Nations, said Sunday that with limited diplomatic options, she would be "perfectly happy" to hand responsibility for dealing with North Korea over to Secretary of Defense Jim "Mattis because he has plenty of military options.""We have pretty much exhausted all the things that we could do at the Security Council at this point," Haley told CNN's Dana Bash on Sunday.Haley declined to clear up what Trump meant when told reporters last month that North Korea "will be met with fire and fury and, frankly, power, the likes of which this world has never seen before" if it continued to threaten the United States.