But Iran has gone far beyond what is necessary for a purely civilian programme. It has concealed several nuclear facilities from the International Atomic Energy Agency, played hide-and-seek with the international community, and rejected all offers of co-operation from the U.S., the EU, and others.

The tragic nuclear accident at Fukushima underscored the urgent need to enhance nuclear safety and the international emergency response framework. I commend the International Atomic Energy Agency for its work.

General Atomics, the progenitor of General Atomics Aeronautical Systems, started life in 1955 when a major military contractor, General Dynamics, feared that the military hardware market might dry up. It began exploring peacetime uses of atomic energy, but abandoned the effort when cold-war military spending took off.

At that time a senator who was on the Joint Committee of Atomic Energy said rather quietly, 'You know, we're having a little problem with waste these days.' I didn't know what he meant then, but I know now.

Penn State in 1955 became the first university to be issued a federal license to operate a nuclear reactor, which it continues to use for studies in the peaceful uses of atomic energy and the training of nuclear industry personnel.

It's ridiculous that time and time again we need a radioactive cloud coming out of a nuclear power-station to remind us that atomic energy is extraordinarily dangerous.

In the spring of 1948, I was able to join the newly created Brookhaven National Laboratory, which was dedicated to finding peaceful uses for atomic energy.

Bilateral talks would have to achieve cessation of the missile work by the North Koreans. And it would have to include, as did the Iranian deal, the International Atomic Energy Agency or some other group coming in to assess that and to enforce that to give information about it internationally.

Few nations have been as reliant on nuclear power as Korea. In many ways, cheap and reliable atomic energy helped make possible the 'miracle on the Han River' - i.e., the swift post-World War II economic surge of Korea.

The big problem for atomic energy is that it can't compete on price with the new age of cheap shale gas and, to a lesser extent, clean coal.