We do not negotiate with the Americans on regional issues, different domestic issues, and international issues. Today, the only matter for negotiation is the nuclear matter. This will become an experience for us. If the other side stops its usual obstinacy, this will be an experience for us and we will find out that we can negotiate with it on other matters as well. But if we see that they continue to behave in the same obstinate and deviant way, well, our previous experience will naturally be strengthened.