Watch Live: H.R. McMaster Gives Press Briefing At 11:30 AM ET

Susan Walsh/AP

National Security Adviser H.R. McMaster is scheduled to hold a press briefing at 11:30 a.m. ET Tuesday. He is expected to address the Washington Post’s reporting that President Donald Trump shared highly classified information, obtained from an ally, with the Russian ambassador and foreign minister in the Oval Office on Wednesday.

Watch live below via NBC: