Trump Says Defense Chief Mattis Will Retire At End Of Februaryby Worldmanin Worldon Posted on 12/20/2018 U.S. President Donald Trump says on Twitter that Defense Secretary Jim Mattis will retire at the end of February. … Click to share on Telegram (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Nextdoor (Opens in new window)Click to share on Mastodon (Opens in new window)Click to share on X (Opens in new window)