Who is Hashem Safieddine, the likely new chief of Hezbollah, reportedly eliminated by Israel?

Hashem Safieddine, poised to succeed slain Hezbollah chief Hassan Nasrallah, was the target of an Israeli strike in Beirut. Safieddine's status is uncertain as reports suggest he might have survived. Lebanon is preparing for Nasrallah's cremation, while Hezbollah and Lebanese authorities have not confirmed Safieddines fate.