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Donald Trump and Kirstjen Nielsen. Photo: Oliver Contreras/For The Washington Post via Getty Images

Homeland Security Secretary Kirstjen Nielsen brought her resignation letter with her when she met President Trump in the White House residence yesterday afternoon, top sources tell Axios.

Inside the room: She wasn't intent on quitting but was prepared to, sources tell us. The meeting went poorly, and Trump didn't even let her announce her "resignation." While she was racing to put out the letter (not that different from one she wrote after midterms), Trump tweeted that she "will be leaving her position."

"She was undercut at every turn," a source close to DHS said. "She's done everything she can do. The White House is eating their own."

Between the lines: Nielsen had been on the outs with some in the West Wing for at least six months, top officials tell us.

  • National security adviser John Bolton has felt the increase in immigration numbers made it clear that her policies weren't effective, and he thought the president should relieve her of her duties, a senior administration official said.
  • Last fall, Bolton took his advice about Nielsen to Trump, incurring the wrath of then-chief of staff John Kelly, a Nielsen protector.
  • Back in October, accounts surfaced of a shouting match between Bolton and Kelly. It turns out that it was over Bolton's Nielsen conversation with Trump.

Be smart: Nielsen's departure empowers White House hardliner Stephen Miller.

  • A Republican Senate aide tells Axios: “Nielsen leaving will make conservatives who were getting fed up with DHS happy."
  • "Real question will be who’s the [permanent] replacement and does that person have the credentials?"
  • "Whoever replaces will have one hell of a confirmation hearing.”

Go deeper: Read the resignation letter

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Go deeper

Read: Former Vice President Walter Mondale's last message

Photo courtesy of Mondale.

Former Vice President Walter Mondale wrote a farewell letter to his staff, sent upon his death on Monday, thanking them for years working together.

Dear Team,

Well my time has come. I am eager to rejoin Joan and Eleanor. Before I Go I wanted to let you know how much you mean to me. Never has a public servant had a better group of people working at their side!

Together we have accomplished so much and I know you will keep up the good fight.

Joe in the White House certainly helps.

I always knew it would be okay if I arrived some place and was greeted by one of you!

My best to all of you!

Fritz

Former Vice President Walter Mondale dies at 93

Walter Mondale, left, with former President Jimmy Carter in Jan. 2018 at the McNamara Alumni Center on the University of Minnesota's campus in Minneapolis. Photo: Anthony Souffle/Star Tribune via Getty Images

Walter Mondale, who transformed the role of U.S. vice president while serving under Jimmy Carter and was the Democratic nominee for president in 1984, died Monday at 93, according to a family spokesperson.

The big picture: President Biden, who was mentored by Mondale through the years, said in 2015 that the former vice president gave him a "roadmap" to successfully take on the job.

Scoop: U.S. ambassador refuses Kremlin push to leave Russia

U.S. Ambassador to Russia John Sullivan. Photo: Anton Novoderezhkin/TASS via Getty Images

The United States ambassador to Russia is refusing to leave the country after the Kremlin "advised" him to return home following new Biden administration sanctions, two sources briefed on the situation tell Axios.

Why it matters: John Sullivan, a respected diplomat who President Biden has, so far, retained from the Trump era, is at the center of one of the most important early tests of Biden's resolve.