The United States made some progress in talks with Iran on its nuclear program and managed to “sharpen up some of the tough issues”, a senior U.S. official said on Monday, but both sides said much remained to be done. The talks themselves were marked, however, by a cache of communications between South African intelligence services and their global partners — including Israel’s Mossad and America’s CIA. They showed Israeli Prime Minister Benjamin Netanyahu’s 2012 claim to the U.N. that Iran was a year away from making a nuclear bomb was contradicted by his secret services. In the leaked document, published Monday by The Guardian and Al-Jazeera, the Mossad purportedly says that Iran “is not performing the activity necessary to produce weapons.” Israel has the Middle East’s only nuclear arsenal and has threatened to attack Iran if it is not satisfied over plans for Tehran’s nuclear program.