All coverage
Perspective | Trump can launch nuclear weapons whenever he wants, with or without Mattis
By Jon Wolfsthal & Bruce G. Blair
Trump names Patrick Shanahan acting defense secretary after Mattis resignation
By Holly Rosenkrantz
Why Mattis Had to Go - POLITICO Magazine
By Blake Hounshell
US envoy in ISIS fight, Brett McGurk, resigns over US withdrawal from Syria
By Veronica Stracqualursi & Elise Labott
James Mattis resigns as defense secretary
By Alex Ward & Jen Kirby
Trump unleashed: Mattis exit paves way for global chaos
By Stephen Collinson
Mattis quits, says his views aren't 'aligned' with Trump's
By Zachary Cohen, Jeremy Diamond & Barbara Starr
Jim Mattis' resignation letter is an absolutely stunning rejection of Trumpism
By Christopher Michael Cillizza
Defense Secretary Jim Mattis resigns, scolding Trump over his military judgment
By David K. Li, Frank Thorp & Mosheh M. Gains
US Defence Secretary James Mattis announces resignation
By Anthony Zurcher
All the ways Mattis tried to contain Trump
By Wesley Morgan
Mattis breaks with Trump in resignation letter
By Connor O'Brien & Bryan Bender
Read James Mattis' resignation letter to Trump: 'We must be resolute and unambiguous' toward Russia and China
By Kevin Breuninger
Defense Secretary James Mattis is quitting because he doesn't agree with Trump
By Amanda Macias & Kevin Breuninger
Brett McGurk, top U.S. envoy in ISIS fight, resigns
By Margaret Brennan
Jim Mattis, Defense Secretary, Resigns in Rebuke of Trump's Worldview (Published 2018)
By Helene Cooper
Mattis resigns after clash with Trump over troop withdrawal from Syria and Afghanistan
By Missy Ryan, Paul Sonne & Josh Dawsey