GOP President-elect Donald Trump ratcheted up his war with the intelligence community Sunday by asking if CIA Director John Brennan himself was responsible for leaking a dossier of unverified information to the press about Trump’s alleged escapades in Russia.

After Brennan appeared on “Fox News Sunday” to call Trump’s comparison of the intelligence community to Nazi Germany “outrageous,” Trump fired of a series of tweets, in which he questioned whether Brennan was personally behind BuzzFeed’s recent publication of a 35-page dossier of totally unverified information on Trump.

“What I do find outrageous is equating intelligence community with Nazi Germany,” Brennan said earlier on Sunday. “I do take great umbrage with that and there is no basis for Mr. Trump to point fingers at the intelligence community for leaking information that was already available publicly.”

Brennan said during that same interview that “there is no interest in undermining the president-elect.”