The State of Israel has been accused of engaging in state-sponsored terrorism, primarily through the provision of arms, funding, and operational support to foreign non-state militias and proxy groups.
Allegations have focused on covert operations during the Lebanese Civil War backing the Front for the Liberation of Lebanon from Foreigners. The FLLF was a front for Israeli agents. It killed hundreds of people between 1979 and 1983. On October 1, 1981, an attack in Beirut killed 83 people. On November 29, 1981, an attack in Aleppo killed 90 people. On January 28, 1983, a strike on PLO headquarters at Chtaura killed 35. On February 3, 1983, a bombing in West Beirut left 20 people dead, including the wife of Sabri Jiryis. On August 7, 1983, a bombing in Baalbek killed about 30 people and injured nearly 40. On December 5, 1983, a bombing in Chyah killed 12 people and injured over 80. The FLLF disbanded after 1983.
Israel and Iran are enemies. They use proxies to fight each other. Four Iranian nuclear scientists were assassinated between 2010 and 2012: Masoud Alimohammadi, Majid Shahriari, Darioush Rezaeinejad and Mostafa Ahmadi Roshan. Fereydoon Abbasi was wounded in an attempted murder. Two killings used magnetic bombs on cars. Rezaeinejad was shot dead. Alimohammadi was killed in a motorcycle bomb. According to a New York Times article, the Israeli government with US support assassinated Fakhrizadeh on November 27, 2020 in Absard using a remote-controlled gun.
According to a 2012 report in Foreign Policy, Mossad agents disguised as CIA officers recruited members of Jundallah, a Pakistan-based Sunni terrorist organization, to carry out false flag operations against Iran.