The Situation Room With Wolf Blitzer

Trump: Iran "will pay very big price" for embassy deaths or damage, says "this is not a warning, it is a threat"; Senior admin official: White House "very concerned" about embassy attack; Trump tweets rail against impeachment, accuse Dems of trying to protect Biden; Hundreds of protesters try to storm US embassy in Baghdad; GOP Senator Collins "open to witnesses" in impeachment trial, criticizes McConnell; January 7th earliest day House could vote on impeachment managers, send articles of impeachment to the Senate; NYT: Bolton, Pompeo, Esper tried to persuade President Trump to release Ukraine aid; Suspect's resume call him "open minded" and "seeking positive and challenging experiences"; Rabbi's son has three staples in head after machete attack; via Knit