Backers say the agreement with the United Arab Emirates is a model for other countries in the region. But critics worry about the UAE's ties with Iran.
When the leaders meet Monday, the US will push for progress toward a Palestinian state, while Israel will ask for a harder line on Iran.
Roxanna Saberi was freed after three months in prison on charges of spying.
Mahmoud Ahmadinejad tells Iran's judiciary to uphold Roxana Saberi's legal rights.
Egyptian police have arrested 25 suspects and are hunting for another 24 in the Sinai peninsula, where officials say the Iranian-sponsored group Hezbollah was operating a covert cell.