DUBAI (Reuters) - The presidency of moderate cleric Hassan Rouhani has opened a window of opportunity in Iran's delicate nuclear diplomacy with the West but Tehran-watchers say that window could close as each side waits for the other to make the first move.
Cautious optimism about talks between Iran and six world powers due to restart in September is a stark contrast to the gloom over on-off negotiations under eight years of previous President Mahmoud Ahmadinejad.
