Robert D. Kaplan

Given the level of anti-Americanism in the world, given the level of frustration with the United States throughout the Muslim world, you've got a homegrown attack or you have a nuclear explosion in the air that is not a test somewhere. Those are still the biggest threats out there.

At CARE, a leading humanitarian organization, we recognize people live their lives in a holistic manner. Issues such as health care, education and economic empowerment cannot be addressed in a vacuum. Thus, effective programs need to tackle the multiple root causes of poverty.

There are people, particularly in the United States with which I am most familiar, who would say how ironic that Tehran would be the sponsor of an anti-terrorism conference, because there are people who say that Iran is a state sponsor of terrorism.

And I think that still is true of this business - which is basically research and development - that you probably spend more time in planning and training and designing for things to go wrong, and how you cope with them, than you do for things to go right.