Watch live: White House holds press briefing

White House press secretary Sarah Huckabee Sanders will hold a press briefing on Wednesday afternoon.

The briefing follows an earlier announcement from Speaker Paul Ryan (R-Wis.) that he will retire from Congress in January. The president lauded Ryan on Twitter by calling him "a truly good man."

In earlier tweets that may become topics at the press briefing, the president warned Russia that missiles "will be coming" to Syria. He also criticized the special counsel's investigation and former President Obama for tensions with Russia.

The briefing is scheduled for 3:30 p.m.

Watch live in the video above.