Its more than hints, see the article.  “A former head of Iran’s Atomic Energy Organization (AEOI) hinted that Iranian nuclear scientist Mohsen Fakhrizadeh had worked on a nuclear weapons program, despite a fatwa (Islamic legal ruling) issued against nuclear weapons by Iran’s Supreme Leader Ali Khamenei [and despite repeated earlier denials by Iran], in an interview with Iran’s IRNA news agency on Saturday.”  See “Former Iranian nuclear head hints Fakhrizadeh worked on nuclear weapons,” Tzvi Joffre, Jerusalem Post, November 28, 2021.

Another threat—they mean it.  “We will not back off from annihilation of Israel, even one millimeter.”  See “Iranian Brig.-Gen. urges destruction of Israel prior to nuke talks,” Benjamin Weinthal, Jerusalem Post, November, 28, 2021.