Killings of Hamas and Hezbollah leaders escalate fears regional war could ignite

The top political leader of Hamas, Ismail Haniyeh, was killed overnight in Tehran, just hours after an Israeli airstrike killed one of the top military leaders of Hezbollah in Beirut. Taken together, after ten months of war in Gaza, the attacks escalated fears that a simmering regional conflict could explode into a new and more dangerous phase. Nick Schifrin reports.

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