The massacre of more than 1,300 Israelis by Hamas terrorists still outrages most of the world. The focus on Hamas, Hezbollah, and their deep ties to Iran exposes the brutality of all three, and Israel’s fearsome, ongoing response enjoys broad support. But the role played by Iran is complex, deadly, and insidious, as explained by Peter Schweizer and Eric Eggers on the most recent episode of The Drill Down.