David Horowitz, the conservative activist whose annual retreats have attracted GOP presidential hopefuls including Sen. Ted Cruz and Gov. Rick Perry, alleged in an interview with Newsmax TV yesterday that Hillary Clinton’s aide Huma Abedin leaked information to the militants who killed four American diplomats in Benghazi, Libya, in 2012.

“Look, Hillary Clinton, this woman is a criminal,” Horowitz told Newsmax host Steve Malzberg. “This woman got four people killed in Benghazi. She, you know, disclosed her private emails to Huma Abedin, a Muslim Brotherhood operative that showed where Ambassador Stephens was all the time, making him a perfect target.”

Abedin has long been at the center of far-right conspiracy theories about Muslim Brotherhood “penetration” of the Obama administration. The conspiracy theory outlet WorldNetDaily has also suggested that Abedin contributed to the Benghazi attack.

Horowitz also claimed that Democrats as a whole have “betrayed this country” in the fight against terrorism.