Former national security adviser Susan Rice believes President Trump should have notified his predecessor about the U.S. raid that ended in the death of ISIS leader Abu Bakr al-Baghdadi.

Rice appeared on CBS's Face The Nation Sunday following Trump's press conference, during which he announced Baghdadi's death. During the presser, Trump confirmed that the now-former head of ISIS was killed after detonating a suicide vest while he was surrounded by three of his children in a cave.

Rice began by praising the military action, calling it "a major milestone" and adding that "it's one that we should be welcoming quite plainly." However, she did warn that Baghdadi's death does not mean "the fight against ISIS is over."

“Do you know, was President Obama informed of the death of al-Baghdadi by the administration? Did you know?” Margaret Brennan asked.

“There’s no reason why I should know. There is a tradition of common courtesy of presidents informing their predecessors of things of significance like this,” Rice answered.

“Since the White House seemingly didn’t feel it necessary to inform the leadership of the intelligence committees on a bipartisan basis, I’m quite confident that they didn’t do the normal protocol with respect to predecessors either," she added.

Brennan then pressed Rice on whether or not the Obama administration notified former President George W. Bush about the 2011 raid on Osama bin Laden's compound. The former national security adviser said they "tried to do that as a matter of courtesy," but she did not explicitly say if the message was communicated in time.