RAMALLAH, West Bank — Closing ranks against Hamas, Egypt's president invited Israeli, Palestinian and Jordanian leaders to a peace summit, officials said today, the biggest show of support yet by moderate Arab states for beleaguered Palestinian President Mahmoud Abbas.

The meeting will take place Monday in the Red Sea resort of Sharm el-Sheikh, said Israeli government spokeswoman Miri Eisin. Egyptian President Hosni Mubarak has invited Abbas, Israeli Prime Minister Ehud Olmert and Jordan's King Abdullah II. Jordan confirmed Abdullah would attend.

Abbas will call for a resumption of peace talks with Israel, arguing that only progress toward Palestinian statehood can serve as a true buffer against Hamas, which took control of Gaza by force last week, Abbas aide Saeb Erekat said.

"The most important thing to realize is that time is of the essence," Erekat said. "We need to deliver the end of occupation, a Palestinian state. If we don't have hope, Hamas will export despair to the people."

As immediate steps, Abbas will ask Israel to remove West Bank checkpoints that disrupt daily life and trade, and to transfer hundreds of millions of dollars in Palestinian tax funds Israel froze after Hamas came to power last year.