Israel called on the entire population of the northern Gaza Strip — about 1.1 million people — to move south within the Palestinian territory within 24 hours. Israeli strikes are pounding the densely populated enclave and troops are massing nearby, ahead of an anticipated ground incursion after Hamas militants staged one of the deadliest attacks in Israeli history. Hamas described the Israeli evacuation warning as psychological warfare and urged people not to comply. Gaza authorities said there was nowhere safe to go under siege, while health officials said it would be impossible to evacuate hospitals, which are already facing power shortages and dwindling supplies. The United Nations and other international human rights groups also criticized the order, warning of devastating humanitarian consequences.