Iran and Israel have been engaged in a proxy conflict since 1985. In the Israeli–Lebanese conflict, Iran has supported Lebanese Shia militias, most notably Hezbollah. In the Israeli–Palestinian conflict, Iran has backed Palestinian groups such as Hamas. Israel has supported Iranian rebels, conducted airstrikes against Iranian allies in Syria, assassinated Iranian nuclear scientists, and directly attacked Iranian forces in Syria. In 2024 the proxy war escalated to a series of direct confrontations between the two countries, and in June 2025, they fought a 12-day war, involving the United States.