President Donald Trump is facing a pivotal decision that could define the next phase of his Middle East policy: whether to allow Turkish troops into Gaza as part of a U.S.-backed stabilization force. The move, which Ankara is lobbying for, has triggered alarm in Israel and among Arab allies who view Turkey’s ambitions and Islamist ties as a threat to regional stability. According to Middle East Eye, Turkey is preparing a brigade of at least 2,000 soldiers drawn from multiple branches of its military to join the mission once a U.N. Security Council mandate is approved. Israel has flatly rejected...