The brutal terrorist attack that killed more than a thousand in Israel last year and set off the ongoing conflict in Gaza has renewed scrutiny of Iran’s support for Hamas and Islamic extremism. A network of proxies and armed groups in the Middle East forms what Tehran calls the “axis of resistance” and provides Iran with strategic depth and cover

Composed mainly of Shiite militants, the axis of resistance is often thought of as a contained regional project mostly relevant to the Shia community. But the discovery of North Korean rocket-propelled grenade launchers among a cache of captured Hamas weapons