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.

While the Israeli government has stopped short of a ground invasion for now, its new strikes in Gaza seem to be an effort to force concessions from Hamas.