Capitalism would self-destruct in no time. So the business classes have always demanded strong, straight intervention to protect the society from the destructive effects of market forces because they don't want everything destroyed.

I don't think that any deal was needed: Iran was not a threat. Even if Iran were a threat, there was a very easy way to handle it - by establishing a Middle East Nuclear Weapons Free Zone, which is something that nearly everyone in the world wants.

The whole intelectual culture has a filtering system, starts as a child in school. You're expected to accept certain beliefs, styles, behavioral patterns and so on. If you don't accept them, you are called maybe a behavioral problem, or something, and you're weeded out. Something like that goes on all the way through universities and graduate schools. There is an implicit system of filtering, which has the, it creates a strong tendency to impose conformism. Now, it's a tendency, so you do have exceptions, and sometimes the exceptions are quite striking.

One contribution scientists can and should make is to be clear and explicit about the limits of scientific understanding, a matter that is particularly important in societies where people are trained to defer to alleged experts.

My suspicion is that those who seem oblivious to suffering, whether it is nearby or in remote corners, are for the most part unaware, perhaps blinded by doctrine and ideology. For them, the answer is to develop a critical attitude toward articles of faith, secular or religious; to encourage their capacity to question, to explore, to view the world from the standpoint of others. And direct exposure is never very far away, wherever we live - perhaps the homeless person huddling in the cold or asking for a few pennies for food, or all too many more.

Iran has been calling for it for years, and the Arab countries support it. Everyone except the United States and Israel support it. The U.S. won't allow it because it means inspecting Israel's nuclear weapons. The U.S. has continued to block it, and in fact blocked it again just a couple of days ago; it just wasn't widely reported. Iran's nuclear program, as U.S. intelligence points out, is deterrent, and the bottom line is that the U.S. and Israel don't want Iran to have a deterrent.

Public opinion can be influential, the media can be influential.