Overview

• Ismail Haniyeh, Hamas political leader, was killed in Tehran, allegedly by Israel.
• Fuad Shukr, a senior Hezbollah commander, was assassinated in Beirut.
• Iran's Supreme Leader Ayatollah Khamenei vows revenge for Haniyeh's death.
• The assassinations complicate ongoing ceasefire negotiations in Gaza.
• International reactions include condemnation and calls for de-escalation.