Israel's orders to Gaza's residents to move ever further south towards the Egyptian border during its offensive and the dire humanitarian situation have sparked Arab and U.N. concerns that Palestinians may eventually be driven over the border.

Israel denies having any plans to push Palestinians into Egypt's Sinai Peninsula as it pursues its goal of destroying Hamas following the group's devastating Oct. 7 attack on Israeli soil. It says it has told Gazans to move for their own safety.

What's behind the concerns?