Israel has launched extensive airstrikes across Gaza, resulting in the deaths of more than 400 Palestinians according to local health authorities. The escalation comes after Hamas refused to release hostages, leading Israeli officials to declare the ceasefire over. Reports indicate at least 404 deaths from the strikes, with Israel blaming Hamas for the breakdown of the ceasefire. The situation in Gaza is deteriorating with increasing military force being promised by Israel, raising concerns over major civilian casualties and further escalation of conflict in the region.