Israel warns of ‘larger’ Gaza assault as strikes kill 55

• Army issues fresh evacuation orders for enclave’s northern areas ahead of planned attack
• Six members of a family killed as air strike levels their home; nine die in attack on former police station
• Aid agencies estimate vast majority displaced at least once since war began

GAZA CITY: Gaza rescue teams and medics said Israeli air strikes killed at least 55 people on Thursday, as the military threatened an even larger offensive if prisoners were not freed soon.

Israel...