WASHINGTON — Secretary of Defense Gen. James Mattis will leave in February, President Trump announced Thursday.

The president tweeted that Mattis will retire at the end of February, and would retire with distinction.

  • Mattis resigned in a letter to President Trump
  • He will stay on to ensure a smooth transition
  • Mattis served as defense secretary for 2 years
  • READ: Secretary Mattis' Resignation Letter (.PDF)

In his resignation letter, according to Spectrum News reporter Samantha Jo Roth, Mattis told the president that he should have a secretary of defense whose views align more closely with the president's beliefs.

In the letter, Mattis detailed his core belief in the importance of global alliances and partnerships, and being resolute against countries like China and Russia who "want to shape a world consistent with their authoritarian model."

"My views on treating allies with respect and also being clear-eyed about both malign actors and strategic competitors are strongly held and informed by over four decades of immersion in these issues," Mattis said. "We must do everything possible to advance an international order that is most conducive to our security, prosperity and values, and we are strengthened in this effort by the solidarity of our alliances."

While the two seemed to have a cordial relationship, recent reports indicate Mattis disagreed with a number of Trump's decisions, including the decision this week to withdraw U.S. troops from Syria.

Mattis was one of the first cabinet secretaries to be confirmed for the Trump administration. 

Reaction to Mattis's Resignation

Lawmakers hearing about the news began sending out statements Thursday night.