DEIR AL-BALAH, Gaza Strip — Israel launched airstrikes across the Gaza Strip early Tuesday, killing more than 400 Palestinians, local health officials said, and shattering a ceasefire in place since January with its deadliest bombardment in a 17-month war with Hamas.
Prime Minister Benjamin Netanyahu ordered the strikes, which killed mostly women and children, after Hamas refused Israeli demands to change the ceasefire agreement. Officials said the operation was open-ended and expected to expand. The White House said it had been consulted and voiced support for Israel’s actions.
The Israeli military ordered people to evacuate eastern Gaza and head toward the center of the territory, indicating that Israel could soon launch renewed ground operations. The new campaign comes as aid groups warn supplies are running out two weeks after Israel cut off all food, medicine, fuel and other goods to Gaza’s 2 million Palestinians.
‘‘Israel will, from now on, act against Hamas with increasing military strength,‘’ Netanyahu’s office said.
The attack during the Muslim holy month of Ramadan could signal the full resumption of a war that has already killed tens of thousands of Palestinians and caused widespread destruction across Gaza. It also raised concerns about the fate of the roughly two dozen Israeli hostages held by Hamas who are believed to still be alive.
The renewal of the campaign against Hamas, which is supported by Iran, came as the U.S. and Israel stepped up attacks this week across the region. The U.S. launched deadly strikes against Iran-allied rebels in Yemen, while Israel has targeted Iran-backed militants in Lebanon and Syria.
A senior Hamas official said Netanyahu’s decision to return to war amounts to a ‘’death sentence'' for the remaining hostages. Izzat al-Risheq accused Netanyahu of launching the strikes to save his far-right governing coalition and called on mediators to ‘’reveal facts'' on who broke the truce. Hamas said at least six senior officials were killed in Tuesday’s strikes.
There were no reports of any attacks by Hamas several hours after the bombardment.