More of an issue of being hostile than actual fighting, and that of virtually all Arab and Persian peoples since the state of Israel was founded right after WWII. Iran meanwhile managed to replace a corrupt, brutal dictatorship, which the US supported, with a fundamentalist Islamic state that views Israel and the US as criminal partners allied against it. This is perpetuated by the Iranian government's ineptness at managing its own peoples' needs - for example having to import refined petro fuel - so needing a scapegoat, resentment at the Israeli success in turning a sandbox nobody really wanted into one of the world's strongest economic and technological powers, Israel's military record (so far) of overcoming war brought to it, and, yes, Israel's lapses into arrogant excesses in efforts to control land.
Fifty years of studying the news.
Best to remember: "All is vanity and striving after wind."