The Lead With Jake Tapper

Pres. Trump & Iran's leaders trade threats after deadly strike; Official: U.S. Expected to deploy B-52 Bombers for Iran contingency ops; U.S. Official: Military notifies Iraq of troop movement; Pentagon: No plans for U.S. to leave Iraq now; Iran vows to retaliate against U.S. for killing of top general; Trump again warns U.S. may attack Iranian cultural sites; U.S. General: Letter about U.S. troop movement was released by mistake; Bolton willing to testify impeachment trial if subpoenaed; GOP Senate aides on Bolton: Witnesses aren't happening... zero pressure to listen to Dems demands; Fury & threats as Iranians mourn top general Soleimani; Hundreds of thousands in Iran mourn top general as Iran's leaders vow retribution; New Iranian top general: We'll kick the U.S. out of Mideast;  via Knit