The Pentagon said it would provide President Donald Trump with options to deal with Pyongyang if the provocations continue.
Earlier, North Korea’s foreign minister said his country reserves the right to shoot down US bombers in international airspace.
“If North Korea does not stop their provocative actions, you know, we will make sure that we provide options to the President to deal with North Korea,” Pentagon spokesman Colonel Robert Manning told reporters on Monday.
The statement follows remarks by North Korea’s top diplomat at the UN on Monday, who said Donald Trump’s tweet that leader Kim Jong-un “won’t be around much longer” was a declaration of war by the United States.
“The whole world should clearly remember it was the US who first declared war on our country,” Reuters quoted him as saying.
“Since the United States declared war on our country, we will have every right to make countermeasures, including the right to shoot down United States strategic bombers even when they are not inside the airspace border of our country.”