Prime Minister Benjamin Netanyahu’s office said he had ordered the aerial attacks after Hamas’s “repeated refusal” to release the remaining hostages it holds. “This is just the beginning,” he said.

The ceasefire between Israel and Hamas, just two months old, has been shaky for some time. But that was thoroughly shattered by Israel’s bombardment of Gaza overnight. What’s behind the move?

The death toll rose to more than 400, Gazan authorities said, marking one of the deadliest days since the war began. The attacks came after a breakdown in talks to release hostages.