Now: Key lawmakers being briefed on Iran crisis; Iranian Foreign Minister: Killing of Soleimanio is "state terrorism" and "an armed attack on Iran"; Trump: We're prepared to attack Iran "if we have to

Defense Secretary: "Exquisite intelligence" on Iran crisis will only be shared with key lawmakers; Trump says "we saved a lot of lives" by killing Soleimani but offers no evidence; Trump says Iran will suffer "consequences" if it launches attacks against Americans; Defense Secretary: US is not looking to start a war but is prepared to finish one; Defense Secretary: Attack planned by Iranian General Soleimani was just "days" away; Pompeo insists Soleimani attack was imminent, says to look at "the days that led up to the strike"; Biden accuses Trump of "reckless disregard for the consequences" of killing Iranian general; White House skewered for failing to disclose Trump meeting with Saudi Deputy Defense Minister; US forces on alert for possible drone attacks; Intel shows Iran moving military equipment; McConnell says he has the votes to move ahead on Senate trial without agreement on witnesses; Defense Secretary: Intel on Soleimani attack plan is "more than razor thin, it's persuasive; Trump: US leaving would be "worst thing to happen to Iraq"; Trump team defends intel behind strike on Iranian general; Sources: Bolton announcement he's willing to testify sent White House scrambling;

To learn more about how CNN protects listener privacy, visit cnn.com/privacy