According to Mossad, Iran cannot have a nuclear bomb before 2015 (due to the virus attack, and to correction of past Israeli exaggerations). A lot can happen. First, Ahmadinejad will no longer be President. Second, the Chief Ayatollah is reportedly suffering from some serious medical problem, and might not be around. There is plenty of time for another round of sanctions to bite. My suggestion: The Security Council should decide that any future supply of nuclear fuel to Iranian power/research plants (by Russians as in Bushehr, or others) should be paid for by an equivalent amount of Iranian Uranium, first enriched and then even raw. Iran does not have much Uranium, and is looking around even TODAY for a seller, so this exchange plan will bring an end to their enrichment program. Problem solved.
Prominent Druze sheikh al-Balous killed in Syria (Haaretz)
from the article: Former Mossad chief: Iran far from achieving nuclear bomb