President Barack Obama's national security adviser is in Israel for talks on Iran's nuclear program.
Tom Donilon is the latest in a series of American officials to discuss the Iran issue with Israeli leaders. Last month, U.S. military chief Martin Dempsey visited Israel, and next month, Israeli Prime Minister Benjamin Netanyahu is expected at the White House.
A White House statement calls Sunday's visit the latest in "regular, high-level consultations."
Both countries believe Iran is trying to build a nuclear bomb. Iran says its nuclear program is for peaceful purposes.
The U.S. says international sanctions must be given more time to stop Iran. Israel says time is running out and all options, including military action, must be considered.
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