Young Egyptians, gazing through the windows of the Internet, have gained a keener sense than many of their elders of the freedoms and opportunities they lack. They have found in social media a way to interact and share ideas, bypassing, in virtual space, the restrictions placed on physical freedom of assembly.

Some suggestions for you :

The international community must do a better job of controlling the risks of nuclear proliferation. Sensitive parts of the nuclear fuel cycle - the production of new fuel, the processing of weapon-usable material, the disposal of spent fuel and radioactive waste - would be less vulnerable to proliferation if brought under multinational control.

Everybody has to chip in, I think, and see how we can have a functioning system of collective security where we do not continue to face the threat of countries trying to acquire weapons of mass destruction or particularly nuclear weapons.

If a country is suspected of going nuclear, you need to understand why. Why does it feel insecure?

The Muslim Brotherhood is a religiously conservative group. They are a minority in Egypt. They are not a majority of the Egyptian people, but they have a lot of credibility because all the other liberal parties have been smothered for 30 years.

The U.S. engages with North Korea, so I don't see why they can't engage with Iran.

Threat is in the eye of the beholder.

If a huge number of people call for change, the government will have to react. If you want to avoid uprisings, or demonstrations, you need to respond to the people's desperate need for change.

Music gives me a lot of peace, either classic music with its structure or the spontaneity of Miles Davis. It brings the best in you.

I'm not a grassroots organizer; that is clear. I believe in a division of labor. I'm not trained to organize the grassroots, and grassroots has to come from the grassroots.

Well, first of all, we now have everybody with the exception of India, Pakistan, and Israel, and I don't think these three countries are going to join by simply providing them an incentive, in terms of technology.

I worry about a democracy having nuclear weapons as much as a dictatorship having nuclear weapons.

Egypt under Hosni Mubarak had deteriorated to the status of a failed state. We must wipe the slate clean and start again.

Israel claims it needs nuclear weapons as a deterrent against any threat to its existence. The Arab world in return feels that this is an imbalanced system; there is a sense of humiliation and impotence.

Even with the best intentions, you can have a nuclear war, a nuclear holocaust, through miscalculation, through accidents.