UPDATE 8:25 p.m. EST:
A U.S. Counterterrorism official, who spoke with Circa's National Security Correspondent Sara Carter, stressed that intelligence information is commonly shared with foreign counterparts.
"It's not unusual for U.S. intelligence officials to share information with foreign partners, including Russians, who are also fighting a common enemy, specifically ISIS, as long as sources and methods are protected," the counterterrorism official said.
UPDATE 7:11 p.m. EST:
"The story that came out tonight as reported is false," H.R. McMaster, Trump's national security adviser, said in response to the Post's report. "I was in the room. It didn’t happen."
WATCH | H.R. McMaster, Trump's national security adviser, responds to The Washington Post's report
UPDATE 7:01 p.m. EST:
H.R. McMaster, Trump's national security adviser, will speak to the press momentarily, addressing The Washington Post report that says the president shared classified information with Russian officials.
President Donald Trump revealed "highly classified information" to the Russian foreign minister and ambassador during a meeting last week, according to a report from The Washington Post.
The information Trump reportedly relayed to Russian Foreign Minister Sergei Lavrov and Ambassador Sergey Kislyak was so sensitive that many of the details hadn't been released to certain parts of the U.S. government, current and former U.S. officials told The Washington Post.
Those same officials said the information Trump disclosed could damage a source of intelligence on the Islamic State.
“I get great intel. I have people brief me on great intel every day,” Trump said during the meeting, an official with knowledge of the meeting told the Post.
The report notes that Trump went on to describe to Lavrov and Kislyak details about ISIS hoping to use laptop computers as bombs on planes.
Protip: Don’t give the Russians classified information. #Classified101— Martin Heinrich (@MartinHeinrich) May 15, 2017
After the news broke, many lawmakers took to Twitter to criticize Trump.
Congress must investigate this irresponsible action & take steps to ensure Trump does no addl damage to US natl sec in his dealings w Russia— Ed Markey (@SenMarkey) May 15, 2017
Protecting our national security is one of the most important tasks a president has, and Trump is failing at it. https://t.co/3hr9htzmZ2— Bernie Sanders (@SenSanders) May 15, 2017
The ACLU tweeted, calling for a special prosecutor to take over the Russia investigation.
U.S. Secretary of State Rex Tillerson released a statement to CNN saying, "During President Trump's meeting with Foreign Minister Lavrov a broad range of subjects were discussed, among which were common efforts and threats regarding counter-terrorism."
Tillerson added that although they discussed the "nature of specific threats," no sources, methods or military operations were mentioned.
Speaker of the House Paul Ryan (R-Wisc.) responded to the news, telling PBS News Hour, "We have no way to know what was said, but protecting our nation's secrets is paramount."
Ryan added that he hopes to receive a full explanation from the administration.
NEW: Statement from @SpeakerRyan came. “We have no way to know what was said, but protecting our nation's secrets is paramount." (1/2)— Lisa Desjardins (@LisaDNews) May 15, 2017
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