Israel intensifies attacks on Gaza; White House envoy seeks cease-fire

White House adviser Sullivan urges Israel to target Hamas in Gaza, avoiding full-scale assault on Rafah. 800,000 people have fled, creating a humanitarian crisis. UN warns of looming famine if aid doesn't reach Gaza. Israeli strikes killed 31 Sunday. Netanyahu vows to defeat Hamas. Cabinet faces rift over postwar Gaza governance plan. Israeli military recovers hostages' bodies. Conflict has killed over 35,000 Palestinians.