Egyptian President Hosni Mubarak arrived on Wednesday in Istanbul for talks with Turkish leaders about efforts to reach a permanent truce in Gaza.
Mubarak was scheduled to meet Turkish President Abdullah Gul and Prime Minister Recep Tayyip Erdogan later Wednesday.
Egypt, France and Turkey had pushed Israel to end its three-week offensive in Gaza last month, launched to halt years of rocket fire on southern Israeli communities.
Gaza's Hamas rulers announced their own cease-fire the same day, but scattered attacks are straining the truce.
More than 100 demonstrators, carrying posters of Hamas leaders, protested the arrival of Mubarak in downtown Istanbul, accusing him of siding with Israel.