Erez Shimoni, a Mossad operative instrumental in Israel's 'Operation Roaring Lion,' was killed during a mission outside the country, as stated by Mossad director David Barnea. While details about the incident remain undisclosed, it has been reported that Shimoni died following a tourist boat accident on Lake Maggiore in northern Italy on May 28, 2023. He was 50 years old and had served in the Mossad for three decades. Barnea highlighted Shimoni's significant contributions to the agency's operations against Iran, describing him as a person of refined manners who connected well with people. 'Operation Roaring Lion,' which began on February 28, 2026, is a joint military initiative by Israel and the United States aimed at countering the Iranian regime amid rising tensions over Iran's nuclear program and internal unrest.