Nuclear Proliferation, Risk and Responsability

How great is the risk of nuclear proliferation and what attitude should the United States and Europe take towards the probability that Iran will develop an independent nuclear capacity within five years? A confrontation between Iran and Israel and The United States would have significant consequences for the populations of Iran, the Middle East and the Far East. What are the possibilities of direct negotiations between the USA and Iran, in order to develop practical solutions that would avoid military intervention, including a new “Marshall Plan” for Iran and the Middle East?