CNN political commentator and Republican strategist Ana Navarro said there may be only one defense for President Donald Trump’s attack-filled speech in Phoenix on Tuesday night.

She wrote on Twitter:

Only possible defensible explanation for Trump's disgusting, unpresidential, narcissistic behavior, would be early-on-set dementia. Maybe. — Ana Navarro (@ananavarro) August 23, 2017

Navarro broke ranks with her party last year, slamming Trump and endorsing Hillary Clinton during the campaign.

She has since remained a harsh critic, last week calling him “unfit to be human” for his initial response to the violence in Charlottesville earlier this month, where he blamed “many sides” instead of calling out white supremacists.

Trump on Tuesday defended that response, which led Navarro to tweet:

Trump making #Charlottesville all about him. Not hateful White Supremacists. Not Heather Heyer. Disgusting narcissism in midst of tragedy. — Ana Navarro (@ananavarro) August 23, 2017

Defensive 71-year-old man baby having a disrespectful tantrum over the way he was treated over #Charlottesville. Someone bring him a bottle🍼 — Ana Navarro (@ananavarro) August 23, 2017

Trump during his speech repeatedly attacked the media, at one point claiming cameras had been turned off despite the entire event being carried live by cable news.

Language in this article and headline has been amended to clarify Navarro’s tweet.