Sen. Chris Murphy Christopher (Chris) Scott MurphyDemocratic senator calls for 'more flexible' medical supply chain to counter pandemics The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon GOP chairman to release interim report on Biden probe 'in about a week' MORE (D-Conn.) said Wednesday that he and two other Democratic senators will introduce a bill barring President Trump from launching a preemptive strike on North Korea without congressional consent.

In a string of tweets, Murphy said that the bill would aim to prevent the president from carrying out a strike — either "nuclear or conventional" — unless Congress first approves such a measure.

"Trump's North Korea threats are real. I will intro bill w brianschatz & CoryBooker to prohibit any preemptive action w/o vote by Congress," Murphy tweeted, referring to Sens. Brian Schatz Brian Emanuel SchatzCDC causes new storm by pulling coronavirus guidance Overnight Health Care: CDC pulls revised guidance on coronavirus | Government watchdog finds supply shortages are harming US response | As virus pummels US, Europe sees its own spike Video of Lindsey Graham arguing against nominating a Supreme Court justice in an election year goes viral MORE (D-Hawaii) and Cory Booker Cory Anthony BookerBipartisan praise pours in after Ginsburg's death DHS opens probe into allegations at Georgia ICE facility Democratic lawmakers call for an investigation into allegations of medical neglect at Georgia ICE facility MORE (D-N.J.).

Trump's North Korea threats are real. I will intro bill w @brianschatz & @CoryBooker to prohibit any preemptive action w/o vote by Congress. — Chris Murphy (@ChrisMurphyCT) October 25, 2017

He warned that such a strike "could kill hundreds of thousands" of people on the Korean Peninsula, and urged Republican lawmakers to back the measure to constrain Trump's "most dangerous power – to make war."

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Tensions between Washington and Pyongyang have risen to new heights in recent months, as the North has stepped up the pace of its missile tests and tested what its government claimed was a hydrogen bomb.

Trump has engaged in an ongoing war of words with North Korea, and has repeatedly threatened military action against the country if it continues to pursue its nuclear ambitions and to make threats against the U.S. and its allies in the region.

In a speech before the United Nations General Assembly last month, Trump warned that the U.S. would "totally destroy" North Korea if it continued its threats.

Trump will travel to China next month, where he is expected to press President Xi Jinping to ramp up pressure on North Korea to curb its weapons programs, Reuters reported this week.

China is North Korea's only major ally, and Trump has said that Beijing should do more to rein in the reclusive country.