After 12 days of bombing by Israel and the US last month, opinions vary about the extent of the damage caused to Iran’s nuclear facilities. Patrick Wintour and Rouzbeh Parsi explain why and what could happen nextWhen the 12-day war against Iran was launched, Israel said it was because the Islamic Republic was on the verge of developing a nuclear bomb. US intelligence reports from earlier in the year told a different story. Now the war is over and confusion remains – has Iran’s nuclear programme been destroyed?The Guardian’s diplomatic editor, Patrick Wintour, tells Michael Safi what we know –