Lest you be bedazzled by Iran's public relations whirlwind, and assume that the removal of sanctions is imminent, remember that such an action is directly tied to the termination of the illegal Iranian WMD program. It is not going to happen, as long as all those centrifuges keep refining Uranium.
More concretely, Iran's defense minister this week announced the opening of a new facility to manufacture anti-aircaft missiles. Does this sound like a country looking for warmer relations with the West ? The missiles are solid fuel-type, apparently more accurate that the liquid fuel missiles currently in use.