They said the information, which had been provided by a USA partner through an intelligence-sharing arrangement, was considered so sensitive that details have been withheld from allies and tightly restricted even within the US government.
But through National Security Advisor HR McMaster, Trump denied the Washington Post's reports. The data he shared was reportedly provided by a USA partner through a sensitive intelligence-sharing arrangement.
Trump, a Republican who has called allegations of links between his presidential campaign and Russian Federation a "total scam", has sharply criticized his 2016 election rival, Democrat Hillary Clinton, for her handling of classified information as secretary of state, when she used a private email server.
According to the Post, Trump appeared to boast about the "great intel" he receives from his aides.
Trump discussed details of the threat that the United States only learned through the espionage partner: how the Islamic State was pursuing a specific plot, how much harm that kind of attack could cause and the specific city in the Islamic State's territory where the USA intelligence partner detected the threat.
Trump is said to have described how the Islamic State was pursuing elements of a specific plot and how much harm that an attack of that magnitude could cause.
The Washington Post story did not say specific sources or methods were discussed, but does cite officials who said Trump revealed the city within ISIS territory where the United States ally had detected the threat Trump had discussed.
"The President and the foreign minister reviewed common threats from terrorist organizations to include threats to aviation", McMaster told The Washington Post.
The Washington Post report Monday led to the latest feeding frenzy. It potentially damages trust that's critical in these kinds of arrangements. "I mean, this shows a complete lack of information about what classified information is and how important".
In April, CNN first reported that U.S. intelligence and law enforcement agencies believed that ISIS and other terrorist organizations had developed new ways to place explosives in laptops and other electronic devices to evade airport security screening methods.
The New York Times also noted that "Trump's disclosure does not appear to have been illegal - the president has the power to declassify nearly anything. It is really frightening for our people, especially the people who managed the relationship in getting the information".
One of the officials said the intelligence discussed by Trump in his meeting with Lavrov was classified "Top Secret" and held in a secure "compartment" to which only a handful of intelligence officials have access. But a photographer from Russian state-media Tass attended the meeting and took photos of a laughing Trump with Lavrov and Kislyak.
But some of the European partners Trump will meet later in his trip have been more skeptical about his policies, including a controversial travel and immigration ban that's been blocked by USA courts. Attorney General Jeff Sessions was forced to recuse himself from any involvement in the FBI's investigations into Russia after it was revealed that he twice met with Kislyak, despite testifying during his confirmation hearing that he had had no contact with Russian officials. He also has stops planned in Israel and the Vatican.
And Deputy National Security Adviser Dina Powell says flatly, "This story is false" and says the president "only discussed the common threats that both countries faced". I was in the room. "It didn't happen", McMaster added without taking any questions.
Tillerson said nature of specific threats was discussed, but sources, methods or military operations were not talked about.
Bob Corker, the Republican head of the Senate Foreign Relations Committee, called the allegations "very, very troubling" if true. The outlet also reported that other members have said they did not get a briefing. Investigators are already probing possible coordination between Trump's campaign and the Russian government, and the president has struggled to shake the issue as he tries to advance his legislative agenda.
"Risking sources and methods is inexcusable, particularly with the Russians", Sen. "There are red lines that even presidents are not supposed to be crossing".
"If the report is true, it is very disturbing", Senate Minority Leader Chuck Schumer said in a statement. "Revealing classified information at this level is extremely risky and puts at risk the lives of Americans and those who gather intelligence for our country". At his rallies, the crowd frequently chanted "Lock her up!"
Let's go back to 2013, when anyone who gave Russian Federation information was a traitor.
On Monday, Ryan spokesman Doug Andres said that, "We have no way to know what was said, but protecting our nation's secrets is paramount".