Republican presidential nominee Donald Trump continued his feud with House Speaker Paul Ryan (R-Wis.) on Sunday, after Ryan distanced himself from Trump in response to the bombshell recording of Trump boasting about sexual assault.

In a series of tweets, Trump called Ryan “a man who doesn’t know how to win,” referring to his loss in 2012, when he was the GOP’s vice presidential nominee, and said that the House speaker “does zilch” to help him defeat Democratic opponent Hillary Clinton.

The Democrats have a corrupt political machine pushing crooked Hillary Clinton. We have Paul Ryan, always fighting the Republican nominee! — Donald J. Trump (@realDonaldTrump) October 16, 2016

Paul Ryan, a man who doesn't know how to win (including failed run four years ago), must start focusing on the budget, military, vets etc. — Donald J. Trump (@realDonaldTrump) October 16, 2016

Wow, interview released by Wikileakes shows "quid pro quo" in Crooked Hillary e-mail probe.Such a dishonest person - & Paul Ryan does zilch! — Donald J. Trump (@realDonaldTrump) October 16, 2016

Trump fired back, calling Ryan “very weak and ineffective” and insisting that he didn’t “care about his support.”

Ryan has largely been silent on Trump since distancing himself.

Trump is scheduled to campaign in Wisconsin on Monday. Ryan will not attend that event; instead, he is scheduled to speak at a GOP fundraiser in Texas.

Editor’s note: Donald Trump regularly incites political violence and is a serial liar, rampant xenophobe, racist, misogynist and birther who has repeatedly pledged to ban all Muslims — 1.6 billion members of an entire religion — from entering the U.S.