President Donald Trump was informed that he had broken protocol. | Getty European official to AP: Country might stop sharing intel with U.S.

A senior European intelligence official told the Associated Press that his country might stop sharing information with the United States if it confirms that President Donald Trump shared classified details with Russian officials.

Such sharing "could be a risk for our sources," the official said.


The official spoke only on condition that neither he nor his country be identified, because he was not authorized to discuss the matter publicly.

At the White House, Trump said in his tweets, "I wanted to share with Russia (at an openly scheduled W.H. meeting) which I have the absolute right to do, facts pertaining ... to terrorism and airline flight safety. Humanitarian reasons, plus I want Russia to greatly step up their fight against ISIS & terrorism."

Trump shared details about an Islamic State terror threat related to the use of laptop computers on aircraft with Russian Foreign Minister Sergey Lavrov and Russian ambassador to the U.S. Sergey Kislyak, a senior U.S official told AP. The classified information had been shared with the president by an ally, violating the confidentiality of an intelligence-sharing agreement with that country, the official said.

Trump later was informed that he had broken protocol and White House officials placed calls to the National Security Agency and the CIA looking to minimize any damage.

The official, who spoke on condition of anonymity because the official was not authorized to speak publicly, would not say which country's intelligence was divulged.

The disclosure put a source of intelligence on the Islamic State at risk, according to The Washington Post, which first reported the disclosure on Monday.

The CIA and the Office of the Director of National Intelligence have declined to comment.

