Israeli tanks have rolled into Rafah. What does this mean for the Palestinians sheltering there?

The Israeli tanks that entered the periphery of Rafah early Tuesday stoked global fears that an offensive on Gaza’s southernmost city could endanger the more than a million Palestinian civilians sheltering there.

The ground assault dimmed hopes of an immediate cease-fire deal that the U.S., Egypt and Qatar have spent months pushing for. In the hours before the attack began, Hamas agreed to a cease-fire proposal that the Israeli government swiftly rejected.