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Trump speaks during a meeting with former Secretary of State Henry Kissinger in the Oval Office in October. Photo: Evan Vucci / AP

Chris Murphy, who sits on the Senate Foreign Relations Committee, tweeted Monday he and "many" others have been hearing more "serious war talk in and near the White House" related to North Korea.

His takeaway: It's time for Congress to "take Trump seriously as he keeps hinting, over and over, that he wants to go to war with North Korea" and get a new AUMF passed.

Murphy's plan: A new AUMF to send a message to Trump that he doesn't have a blank check from Congress to declare war on North Korea or launch a first strike without Congressional authorization. He told Vox's Ezra Klein one subtle way to do that would be to "authorize action against ISIS and the Syrian regime as a way of making the president see clearly that action against North Korea shouldn't be taken without authorization."

The Senate recently dashed Rand Paul's hopes to repeal the war authorizations for the Afghanistan and Iraq wars, but some influential lawmakers share his opinion that a vote on an AUMF is a long time coming, including Tim Kaine and Jeff Flake. The vote tallied out at 61-36.

One concern is that it's a paradigm shift — "it is usually the military trying to convince the president to view a problem through a kinetic lens," but the dynamic Trump has set up appears to be the reverse of that, and sets up the need to walk Trump away from a nuclear cliff's edge, and not the other way around. Another concern is about Congress — Murphy said there's an "atrophy of the muscles of Congress" in its failure to act on authorizing use of military force for years.

Go deeper

Updated 3 hours ago - World

In photos: Pope Francis spreads message of peace on first trip to Iraq

Pope Francis waving as he arrives near the ruins of the Syriac Catholic Church of the Immaculate Conception (al-Tahira-l-Kubra), in the old city of Iraq's northern Mosul on March 7. Photo: Vincenzo Pinto/AFP via Getty Images

Pope Francis was on Sunday visiting areas of northern Iraq once held by Islamic State militants.

Why it matters: This is the first-ever papal trip to Iraq. The purpose of Francis' four-day visit is largely intended to reassure the country's Christian minority, who were violently persecuted by ISIS, which controlled the region from 2014-2017.

Cuomo faces fresh misconduct allegations from former aides

New York Gov. Andrew Cuomo during a February press conference in New York City. Photo: Seth Wenig/Pool/AFP via Getty Images

The office of New York Gov. Andrew Cuomo (D) was on Saturday facing fresh accusations of misconduct against his staff, including further allegations of inappropriate behavior against two more women. His office denies the claims.

Driving the news: The Washington Post reported Cuomo allegedly embraced an aide when he led the U.S. Department of Housing and Urban Development and that two male staffers who worked for him in the governor's office accused him of routinely berating them "with explicit language."

In photos: Protesters rally for George Floyd ahead of Derek Chauvin's trial

Chaz Neal, a Redwing community activist, outside the Minnesota Governor's residence during a protest in support of George Floyd in St.Paul, Minnesota, on March 6. Photo: Kerem Yucel/AFP via Getty Images

Dozens of protesters were rallying outside the Minnesota governor's mansion in St Paul Saturday, urging justice for George Floyd ahead of former Minneapolis police officer Derek Chauvin's trial over the 46-year-old's death.

The big picture: Chauvin faces charges for second-degree murder and manslaughter over Floyd's death last May, which ignited massive nationwide and global protests against racism and for police reform. His trial is due to start this Monday, with jury selection procedures.