DONALD Trump has a new target in his war of words with Morning Joe hosts Joe Scarborough and Mika Brzezinski: their NBC bosses.

"Crazy Joe Scarborough and dumb as a rock Mika are not bad people, but their low rated show is dominated by their NBC bosses. Too bad!"

It's the latest salvo in the battle between Mr Trump and the cable television hosts, which erupted on Thursday when Mr Trump tweeted about the pair, reports the New York Post .

"I heard poorly rated @Morning_Joe speaks badly of me (don't watch anymore). Then how come low I.Q. Crazy Mika, along with Psycho Joe, came to Mar-a-Lago 3 nights in a row around New Year's Eve, and insisted on joining me. She was bleeding badly from a facelift. I said no!" Mr Trump tweeted on Thursday.
 

The social media sniping with the Morning Joe anchors sparked bipartisan criticism, and Brzezinski fired back by posting a picture of a cereal ad about "little hands."

Mr Trump began his Saturday morning online with a tweet of support for cable news anchor Greta Van Susteren, who was fired from MSNBC on Thursday.

"Word is that @Greta Van Susteren was let go by her out of control bosses at @NBC & @Comcast because she refused to go along w/'Trump hate!'" Mr Trump tweeted at 8:59am (local time).

The former Fox News host's MSNBC show lasted just six months.

AdWeek reported she had the No. 30-rated cable news show. Her main competition at 6pm, Fox Newser Bret Baier, ranks No. 5.

The Tweeter-in-Chief also took a slam at CNN in his Saturday-morning tweet storm.

"I am extremely pleased to see that @CNN has finally been exposed as #FakeNews and garbage journalism. It's about time!" he wrote at 9:12am (local time) on Saturday.

The embattled network was forced to retract a story about the Russian scandal last week, prompting three staffers to resign.

This article was first published in the New York Post.