White House chief of staff John Kelly John Francis KellyMORE reportedly didn't know President Trump would publicize the fact that Kelly didn't receive a call from former President Obama after his son died in Afghanistan.

Kelly told Trump ahead of an interview Tuesday that Obama didn't call him after his son died, multiple White House officials told CNN.

Trump then used that information during the interview, when he was asked about his claim a day earlier that past presidents, including Obama, didn't call the families of fallen soldiers.

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"To the best of my knowledge, I think I've called every family of somebody that's died, and it's the hardest call to make," Trump told Fox News Radio host Brian Kilmeade.

"As far as other representatives, I don't know, I mean you could ask Gen. Kelly, did he get a call from Obama?"

Kelly, a retired Marine general, was not expecting Trump to bring that up publicly, according to CNN.

When asked about the comments Wednesday during the White House press briefing, press secretary Sarah Huckabee Sanders said she didn't know if Trump warned Kelly before bringing up his son in the interview.

"I think that Gen. Kelly is disgusted by the way that this has been politicized and that the focus has become on the process and not the fact that American lives were lost," Sanders said.

"I think he's disgusted and frustrated by that," she said. "If he has any anger, it's towards that."