"That's why we keep the information that we get from intelligence sources so close.to prevent that from happening", Corker said. Their on the record accounts should outweigh the anonymous sources.
McMaster said the story, initially reported by The Washington Post, was false. "The president only discussed the common threats that both countries faced".
But Trump's supposed disclosure as reported by The Washington Post drew strong condemnation from Democrats and even cautious alarm from some top Republicans, marking an - at-best - embarrassing political moment as Trump prepares to visit the Middle East on his first presidential trip overseas.
It is not irrational for President Donald Trump to be seeking a strategic alliance with the Russian government against ISIS, a former Central Intelligence Agency official told CNBC on Tuesday.
Yates also told Cooper she had never leaked any classified information to the media - countering a claim Trump made in a tweet earlier this month. Last week, White House spokesmen stepped forward to explain the circumstances under which FBI Director James B. Comey had been fired, pointing to his handling of the Hillary Clinton investigation and saying the decision originated in the Justice Department.
National Security Adviser HR McMaster told reporters the story, "as reported", was "false".
It's unlikely that Trump has broken any law.
In a tweet, Trump said he had an "absolute right" to discuss these matters with Russian Federation, noting that the conversation was held at an "openly scheduled" White House meeting.
Donald Trump has defended his sharing of information with Russian officials, saying he has an "absolute right" to do so as president.
Two U.S. officials said Trump shared the intelligence, supplied by an ally of the United States in the fight against the Islamist group, with Russian Foreign Minister Sergei Lavrov and Russian Ambassador Sergei Kislyak during a meeting in the Oval Office last Wednesday.
Others at the meeting realised the mistake and scrambled to "contain the damage" by informing the CIA and the National Security Agency (NSA), says the Post.
The CIA has declined to comment.
Many lawmakers expressed concern Monday over what the report could mean for the US's relationships with its allies.
Donald Trump's ritual humiliation of White House staffers continues. "You can do other things with them but you shouldn't read them".
"It's creating an environment that I think makes - it creates a worrisome environment", he said.
"It could undermine an operation that could be saving lives, and it undermines the trust that we would have with our allies", said House Minority Leader Rep. Nancy Pelosi.
The controversy engulfed the White House.
She called for the Senate Intelligence Committee to be briefed on the matter. This is often because of the highly sensitive sources and methods used to obtain it.
The story prompted Sen. Given the well-publicised ban on laptops in cabins on certain Middle Eastern routes, whoever revealed that information is unlikely to be still in place.
The White House declared the allegations, first reported by the Washington Post, incorrect. Turnbull called it "the bedrock of our national security".
Secretary of State Rex Tillerson also disputed the report.
Muffled yelling was heard coming from the area near the room, but after a reporter tweeted about the noise, press staffers quickly turned up their television volume, blasting the sound to drown out everything else.