A longtime biographer of President Donald Trump called on Republicans on Monday to impeach and remove the president "quickly," after reports emerged that Trump is considering a nuclear attack against Iran.

Seth Abramson, author of three bestselling books on Trump, took to social media to warn that the president is a danger to the entire world. Pointing to an article on Trump's interest in using nuclear weapons to end his spiraling war, Abramson wrote, "This just dropped... I wish we lived in a world in which Republicans — yes Republicans — were capable of actually coming around and understanding they need to impeach and remove this man quickly to save the planet. I mean all of us. Their families, my family, their friends, my friends." (X post)

In a follow-up post, Abramson continued: "It seems increasingly likely that one day Americans are going to awaken to a mushroom cloud in the Middle East and the beginnings of a World War without a single politician in D.C. having taken a single meaningful step to remove an unambiguously psychopathic president from power." (X post)

Any removal effort would face steep constitutional math: the House can impeach by simple majority, but conviction requires a two-thirds vote in the Senate — a bar that cannot be cleared without broad Republican support. Trump was already impeached twice during his first term, over his dealings with Ukraine in 2019 and over the January 6, 2021 attack on the Capitol, and the Senate acquitted him both times. No American president has ever been removed from office through impeachment.

Abramson is not the only figure who has spent a great deal of time studying Trump to warn about the danger of the president's nuclear designs. Miles Taylor, who served as Deputy Chief of Staff in the Department of Homeland Security during Trump's first term and later revealed he was the anonymous author of a 2018 New York Times op-ed describing resistance inside the administration, has said he "watched Donald Trump talk about nuclear weapons like they were presidential toys," and that "he may be closer to playing with them than you think."

The authority at issue is singular. Under long-standing U.S. nuclear command-and-control arrangements, the president alone can order the use of nuclear weapons, and no congressional or cabinet approval is legally required before launch. The United States has not used nuclear weapons in war since the atomic bombings of Hiroshima and Nagasaki in 1945.

According to Taylor, when Trump butted heads with North Korea in 2017, Defense Secretary James Mattis began preparing DHS officials for nuclear war. "For the first time in the Department of Homeland Security's history, we ran exercises for a potential real-life nuclear strike on American soil, because frankly, we couldn't rule out that our own president might take us into such an apocalyptic situation," Taylor said.

Taylor also asserted that Trump has maintained "nuclear fantasies" for a long time. As a candidate in 2016, MSNBC's Joe Scarborough reported, a foreign policy adviser came away from a briefing with Trump rattled because Trump asked, three separate times, some version of the question: "If we have nuclear weapons, why can't we use them?" Candidate Trump also told The New York Times he wasn't sure it "would be a bad thing for us" if Japan built its own nuclear deterrent against North Korea, and he told CNN's Anderson Cooper that Saudi Arabia should have nukes, too, "absolutely."

"Since then, Trump has toyed with nuclear weapons more openly and more recklessly than any American president ever entrusted with the stewardship of the bomb," Taylor wrote.

Then on Monday, another figure from Trump's orbit, former Representative Marjorie Taylor Greene, posted that the president and his advisors "are discussing using nuclear weapons on Iran in strategy meetings… It's real. I'm not speculating, I know. And it's pure evil." (X post)