Reason doesn't mean very much in a country like North Korea.

I am not a national leader. If I am a national leader I can speak out all that I want.

A deal must include an equitable global governance structure. All countries must have a voice in how resources are deployed and managed.

Reason doesn't mean very much in a country like North Korea.

Nuclear terrorism is one of the most serious threats of our time. Even one such attack could inflict mass casualties and create immense suffering and unwanted change in the world forever. This prospect should compel all of us to act to prevent such a catastrophe.

Millions of people in nearly 80 countries still live in fear of landmines and explosive remnants of war, which take an unacceptable toll on lives and limbs, and people's livelihoods

There can be no solution to the challenge of climate change that is not global. But if we can come together in partnership, we can transform today's challenge into tomorrow's opportunity - an opportunity for green growth and sustainable prosperity... we also need a strong bottom-up push from academics and opinion-shapers such as you. Universities such as yours are founts of ideas and innovation. They are furnaces of innovation and entrepreneurship. So, send forth this word.