"It's something we've been facing for the last year, something we're very aware of moving forward," an IDF official told Newsweek.

Israel said it bombed an underground bunker where senior Hezbollah officials were meeting at midnight local time. The targets included Hashem Safieddine, the presumed successor to Hassan Nasrallah, the group’s recently assassinated leader, Israeli officials said. Here’s what we know about Safieddine.