Israel was the key American partner who provided ISIS-related intelligence that President Donald Trump shared with Russian diplomats at a meeting last week, NBC News reported.
Israel's involvement, first reported by The New York Times, was confirmed by three government officials with knowledge of the matter.
"Israel has full confidence in our intelligence sharing relationship with the United States and looks forward to deepening that relationship in the years ahead under President Trump," Israel's Ambassador Ron Dermer said in a statement.
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On Tuesday, the White House defended Trump's discussing information, reported to be highly classified and involving an ISIS plot on airplanes, with Russia. But the disclosure ignited a firestorm of controversy in Washington.
Trump did not know the source of the information, national security adviser H.R. McMaster said at a news briefing Tuesday.