BY JOSEPH KRAUSS, SAMY MAGDY AND MELANIE LIDMAN

JERUSALEM (AP) — The Israeli military said Wednesday that it has reopened the Kerem Shalom crossing into Gaza, a key terminal for the entry of humanitarian aid that was closed over the weekend after a Hamas rocket attack killed four Israeli soldiers nearby.

An Israeli tank brigade seized the nearby Rafah crossing between Gaza and Egypt early Tuesday, and it remained closed, but that limited incursion does not appear to be the start of the full-scale invasion of the crowded southern city that Israel has repeatedly promised.

The looming operation threatens to widen a rift between Israel and its main backer, the United States, which says it is concerned over the fate of around 1.3 million Palestinians crammed into Rafah, most of whom fled fighting elsewhere. Israel says Rafah is Hamas’ last stronghold and that a wider offensive there is needed to