Now, just a few days before Trump's debut on the global stage, he's giving allies new reasons to worry. According to The Washington Post, the nature of the information was related to an Islamic State terrorist threat and gathered by a United States intelligence partner.
Even before Trump's meeting with the Russians, Washington's intelligence partners overseas have noted a barrage of reports around Trump, the Russians and spies. They said it was considered so sensitive that details have been withheld from allies and tightly restricted even within the USA government.
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".
The chairman of the Senate Foreign Relations Committee says the Trump White House "has got to do something soon to bring itself under control and order". "At no time - at no time - were intelligence sources or methods discussed", McMaster said.
"Two other senior officials who were present, including the secretary of state, remember the meeting the same way and have said so". Their on-the-record accounts should outweigh those of anonymous sources. He said Trump discussed a range of subjects with the Russians, including "common efforts and threats regarding counter-terrorism".
The Washington Post's report on Monday claimed that the revelation made by Trump during his meeting with visiting Russian Foreign Minister Sergey Lavrov put a source of intelligence on the Islamic State at risk.
"Whether he is fired or not is a decision by the President of the United States to make, but it doesn't seem like that's a person who should be sitting in the national security adviser position", she said.
The information did not directly reveal the source of the intelligence but intelligence officials tell CNN that there is concern that Russian Federation will be able to figure out the highly sensitive source. There were three official denials from the Trump Administration. Trump, McMaster added, didn't know where the information came from.
Trump's meeting with the Russians came last Wednesday, the day after he fired FBI Director James Comey, who was overseeing an investigation into Russian meddling in the US elections and possible ties between the Trump campaign and Russia.
Executive Order 13526 now governs national security information.
Australia is a member of the Five Eyes intelligence-sharing program with the U.S., Canada, Britain and New Zealand. According to the Post, Trump "did not reveal the specific intelligence-gathering method, but he described how the Islamic State was pursuing elements of a specific plot and how much harm such an attack could cause under varying circumstances". The man sitting in the Oval Office, with access to unfettered information not only from the United States, but also our "five eyes" partners - the intelligence alliance we are part of with Australia, Canada, New Zealand and the United Kingdom - apparently can not be trusted to keep it to himself.
The White House has pushed back against those reports, but has not denied that classified information was disclosed in the May 10 meeting between Trump and Russian diplomats.
There's no question that the president has the legal authority to divulge classified information - even to rivals and adversaries.
Reaction from Democrats on the House and Senate intelligence committees was full-throated. They said the information, which had been provided by a US partner through an intelligence-sharing arrangement, was considered so sensitive that details have been withheld from allies and tightly restricted even within the USA government.
Though an angry White House official told CNN they felt "tricked" by the Russians, White House spokeswoman Sarah Huckabee Sanders said "proper protocol was followed" by not allowing media into the meeting. He said if it's true, it would be a slap in the face to the intel community.
It's a very big stretch to suggest that just by revealing the city of an ISIS threat to the Russians, they or anyone else could identify the source of this intelligence.
The story prompted Sen.
Trump's tweets Tuesday morning indicated that he did share some information with his Russian visitors.
Sen. Ron Wyden, D-Ore. - who had just had a root canal - read reporters a statement he scrawled out in the dentist's chair after learning about the story. His many pronouncements and actions since then have not eased their concerns. "He wasn't briefed on the source", he said.
Putin (left) and Russian ambassador Sergey Kislyak at the White House last week.
It was unclear precisely where they were coming from or what they were - but after a reporter tweeted about the noise, White House staffers quickly turned up the volume on the office television, blaring a newscast loudly enough to drown out any other potential noise.