The Post cited current and former U.S. officials who said Trump had shared classified details with Russian Foreign Minister Sergei Lavrov and Russian Ambassador to the U.S. Sergey Kislyak.
Afterward, White House officials took steps to contain the damage, placing calls to the CIA and the National Security Agency, the newspaper said.
Trump also was furious after FBI Director James B. Comey privately informed him that the FBI had received a dossier compiled by a former British intelligence officer that claimed that Russians had gathered blackmail material against him and that people in his orbit had met with Russian agents during the campaign.
Speaking to reporters ahead of a closed-door UN Security Council meeting on the missile launch, USA ambassador to the United Nations Nikki Haley also made clear that Washington would only talk to North Korea once it halted its nuclear program.
There is no evidence that Trump went through any of those calculations before blurting out what is known as code word information - intelligence-speak for information so highly classified it is above top secret, and usually limited to the smallest possible pool.
Intelligence sharing is always hard and fraught, said Juliette Kayyem, a former senior official at the Department of Homeland Security, and the recent meeting between Mr. Trump and Russian officials will complicate future co-operation.
"This is the last place in the world I wanted to be", he said, nervously, as he was pushed for information. However, officials anxious he had given the Russians enough details to be able to identify the source themselves.
As they struggled to limit the fallout on Monday, Mr Spicer and other Trump aides made a decision to send Lt Gen HR McMaster, the national security adviser, to serve as a surrogate.More news: Paswan asks Nitish to break silence on Lalu
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That message was echoed by Yves Trotignon, a former counter-terrorism analyst for France's DGSE intelligence agency, now with risk consultant Riskeco, who said Trump violated a basic tenet of intelligence sharing. He said the President had been engaging in "routine sharing" with foreign leaders and argued that some of the information was publicly available anyway. Trump's response? Invite the Russians into the Oval Office, grinning and shaking hands and offering up choice bits of intel. Russian Federation is aligned with Iran, which is considered a major threat to Israel - the information Trump gave Russian Federation could end up in Iran's hands. Other outlets, including The Associated Press, later confirmed that report.
"There is a special understanding of security cooperation between our countries". You know, where everything about classified info should be shared. He said he would give the Federal Bureau of Investigation a week and then "if we need a subpoena we'll do it".
In a statement, Israel's ambassador to the U.S. Ron Dermer said the partnership between the U.S and Israel was solid.
WASHINGTON, D.C. (WWSB)-Suncoast Congressman Vern Buchanan (R-Longboat Key) is releasing a statement, calling on former Federal Bureau of Investigation director James Comey to testify before Congress in regard to his conversations with President Donald Trump.
However the revelations raised eyebrows on all sides of the political divide including from his own party.
Arizona Sen. John McCain called WaPo's report "deeply disturbing".
"As I mentioned already we don't say what's classified and what's not classified".
An excerpt from an official transcript of the meeting reveals that Trump told them: "I get great intel".
The turmoil overshadowed Republican legislative priorities such as healthcare and tax reform and laid bare sharp divisions between the White House and U.S. intelligence agencies, which concluded late previous year that Russian Federation had tried to influence the 2016 presidential election in Trump's favor.