U.S. officials reportedly urged CNN and other news outlets to withhold certain details from their reporting on highly classified information about an Islamic State in Iraq and Syria (ISIS) terrorist plot that President Trump discussed with Russian diplomats.

Perez was asked to leave out specific details from his report on the plot to use laptop computer bombs, including the city from which some of the intelligence was collected.

"By reporting the city's name, Trump administration officials insisted, that would tip off American adversaries about sources and methods used to gather the intelligence," Tapper said.

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The officials insisted it could put individuals in perilous danger.

“It would, they insisted, get people killed,” Tapper said. Trump, however, reportedly mentioned the city in his conversations with Russian Foreign Minister Sergei Lavrov and Ambassador Sergey Kislyak on May 10. "It's the same city, it's the same city that CNN was cautioned not to report," Tapper said. White House officials have emphasized that Trump acted within his rights as president to share information, but questions have been raised about how the disclosure could impact relations with the ally behind the intelligence, which the Times reported Tuesday was Israel.