President Trump said Friday that he is confident the United States' options toward North Korea are "effective and overwhelming".
Speaking to military personnel at Joint Base Andrews in Maryland on Friday en route to his New Jersey golf club, Mr Trump said that North Korea had "once again shown its utter contempt for its neighbours and the entire world community".
North Korea on Friday fired a missile which flew over Japan, but resulted in Japanese citizens being told to take cover.
The UN Security Council imposed the "strongest sanctions ever" on North Korea Monday, putting intense pressure on the regime.
Trump's comments came after H.R. McMaster, his national security adviser, reaffirmed that the Trump administration has military options in place for dealing with North Korea.
Haley said recent sanctions have "strangled" North Korea's "economic situation", calling the impact "dramatic".
"It's not what we would prefer to do, so what we have to do is call on all nations, call on everyone to do everything we can to address this global problem short of war", he said, flanked by U.N. Ambassador Nikki Haley.
In a statement, the Security Council said the launch was carried out just three weeks after a first missile overflew Japan and less than two weeks after Pyongyang's sixth and biggest nuclear test.
"There is a military option", he said.
"We ought to make clear what's different about this approach is that we're out of time", McMaster said. "At that point, there's not a whole lot the Security Council is going to be able to do from here, when you've cut 90 percent of the trade and 30 percent of the oil". "... I have no trouble kicking it to [Defense Secretary] Gen. [Jim] Mattis, because I think he has plenty of options".