Has the pendulum already swung in favour of Iran? Tehran and Washington are treating two days of face-to-face talks in Geneva as a momentous occasion - it's the first time the two have met like this in 30 years. But there have already been plenty of bilateral discussions over Iran's nuclear ambitions. We take a look at exactly what is at stake here, and at just how badly both sides want a deal.
Claude VAN ENGELAND
Journalist and Blogger
Cercle Iran Economie
Research Director, National Iranian American Council
Director of research at the Washington Institute for Near East Policy