Israel and Iran have been on a collision course throughout the Gaza war. The war erupted after Hamas and Islamic Jihad, two militant groups backed by Iran, carried out a devastating cross-border attack on Oct. 7 that killed 1,200 people in Israel and kidnapped 250 others.Israel’s offensive in Gaza has killed over 33,700 Palestinians, according to local health officials, and caused widespread devastation.Throughout the war, Israel has traded fire across its northern border with Lebanon’s Iranian-backed Hezbollah militant group, while Persian-backed militias in Iraq and Yemen have also attacked Israel.