President Donald Trump's national security adviser says the USA has a military option for North Korea, but that is not its preferred route.
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".
Earlier this week, the UN Security Council agreed to tighten sanctions on North Korea, banning its textile exports and capping fuel supplies.
Trump's adviser, H.R. McMaster, told a press briefing at the White House that there is a military option to deal with the regime.
A White House reporter asked Haley about Trump's speech next week at the U.N. General Assembly and what might be said.
McMaster stressed Friday that the U.S.is still trying to resolve the conflict diplomaticcaly.
The UN Security Council held an emergency meeting on Friday in NY to discuss the crisis, though no further sanctions were expected to be agreed.
The council "strongly condemned these launches, condemned further the DPRK for its outrageous actions, and demanded that the DPRK immediately cease all such actions", a statement said, referring to North Korea by its official name, the Democratic People's Republic of Korea.
"In the words of North Korea, we have strangled their economic situation at this point".
"After seeing your capabilities and commitment here today, I am more confident than ever that our options in addressing this threat are both effective and overwhelming", Trump said inside an airplane hangar, surrounded by United States airmen and with a looming stealth bomber positioned behind him.
Having said that, I have no problem kicking it to Gen. Mattis because I think he has plenty of options. On Monday, it unanimously approved its toughest sanctions yet on North Korea over its nuclear test.