One hundred and eighty-six national delegations, 44 heads of state or government and, hold on to your hats, 1,528 media registrations. Wow. For most people in Rome, the recent high-level conference on world food security and the challenges of climate change and bioenergy held at the Food and Agriculture Organization of the United Nations (FAO) in early June meant snarled traffic anywhere in the proximity of the Circus Maximus and the Baths of Caracalla, closed-down subway stations, re-routed city buses, whirring helicopters and negative news stories about how much the Japanese premier was spending on his hotel suite, what threats against Israel Iranian president Mahmoud Ahmadinejad had made during crowded press conference, held appropriately in FAO