Washington (CNN) Days after President Donald Trump claimed the US killed Iran's top military general because he was targeting four American embassies, two of the President's top national security officials are declining to provide evidence of the intelligence used to justify the US drone strike.

In interviews that aired Sunday, Defense Secretary Mark Esper and national security adviser Robert O'Brien both did not cite specific intelligence information when pressed by their interviewers. Trump said in an interview Friday that he approved the military attack earlier this month that killed Qasem Soleimani because he believed the Iranian general was targeting the embassies.

"The President never said there was specific intelligence to four different embassies," Esper told CNN's Jake Tapper on "State of the Union." But Esper said he shared the President's belief that the embassies were threatened by Soleimani.

"What the President said with regard to the four embassies is what I believe as well. He said that he believed that they probably, that they could have been targeting the embassies in the region,"Esper said. And in an interview with CBS that aired Sunday, Esper said he "didn't see" a specific threat against four embassies in the intelligence.

Similarly, O'Brien conceded in an interview on Sunday with ABC that it was unclear whether embassies or US military bases would be targeted, but insisted Trump's claim about four embassies being threatened was "consistent with the intelligence."

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