Bordallo was critical of President Donald Trump's vow Tuesday to answer North Korea "with fire and fury like the world has never seen" if Pyongyang continues to threaten the U.S. She urged Trump to work with the worldwide community to de-escalate tensions. "They will be met with fire and fury like the world has never seen", President Trump said.
"It is not Donald Trump's rhetoric, it is North Korea that has behaved in a way that has escalated things far beyond the kind of behaviour that we thought we were going to expect from Kim Jong-un when he first came into power".
North Korea has developed the ability to miniaturise nuclear warheads which can fit inside missiles, USA intelligence believes.
North Korea may have successfully produced a nuclear weapon small enough to fit inside its missiles.
Washington's alarm over North Korean leader Kim Jong Un's pursuit of a nuclear capability has intensified in the past month after the North conducted two tests of intercontinental ballistic missiles last month.
He said North Korea's escalating threats showed it was feeling the pressure from a successful US strategy.
The threat was released by state-run media, and said the goal of striking Guam would be to subdue the US military bases there, particularly the Anderson Air Force base where nuclear-bombers are stationed.
On Monday, North Korea issued a similarly strong threat to the U.S.
The statement says the move is in response to a recent U.S. ICBM test.
Pyongyang on Wednesday said it was considering missile strikes near the US Pacific territory of Guam.
Yesterday it was reported that North Korea's nuclear program has taken another massive step forward.
North Korean said it was ready to use nuclear weapon against the U.S. if it was attacked.
A spokesman for North Korea's military told KCNA that it would carry out a pre-emptive operation if there were signs of U.S. provocation.