The strategy of neo-conservatives against Iran and the region destroyed the trust-building process. Now there is a good opportunity for President Barack Obama to change the US's Iran policy by adopting a non-irritating language for talks.
It is clear that there is a willingness to co-operate on both sides. Security in Iraq and support for its government, suppression of radical and terrorist trends in Afghanistan, as well as of training centres of terrorism in the region (in particular in Pakistan and some Arab countries) and the fight against production and distribution of drugs can form the elements for that.
In Iran, however, there is no willingness to co-operate with the US without being paid back. That is because of Iran's past experience, when it co-operated with the US in Iraq and Afghanistan but received nothing but pressure in return. Today, the two sides need a grand bargain.