Days after a speech in Israel deemed by many in the Arab world to be unhelpfully pro-Israel, President Bush today challenged Middle East leaders to reform their governments and stand together against Iran.

Top administration officials also said that the president may return to the region before his term is up if a peace agreement between the Israelis and Palestinians looks achievable.

Mr. Bush, speaking to a few hundred government and business leaders in Sharm el Sheikh, Egypt, ended his five-day trip to the Middle East by drawing attention to repressive governments in the region.