US President Joe Biden, seeking to push a Gaza ceasefire, on Monday warned Prime Minister Benjamin Netanyahu against invading Rafah as Israel defiantly issued evacuation orders and carried out intense air strikes on the crowded Gaza city.

The United States said it was reviewing a response from Hamas, which said it has accepted a deal to halt seven months of war and free hostages, with CIA Director Bill Burns in the region to negotiate through Arab allies.

Biden told Netanyahu in April that invading Rafah would be a “mistake,” and Secretary of State Antony Blinken told him last week in Jerusalem that there should be no offensive due to the safety of more than one million civilians sheltering there.