The single biggest threat that we face is a nuclear weapon or some weapon of mass destruction. What that means is that we have to be extraordinarily aggressive and vigilant in controlling nuclear proliferation.

Some may still deny the overwhelming judgment of science.

You work with what you got.

The United States, we know what happens when we start dividing ourselves along lines of race or religion or ethnicity.

We've been able to build up the Afghan security forces and stabilize it.

What is important is that we make sure to work together, that we understand our strength comes from unity and not division.

Everybody acknowledges that the current path we're on is unsustainable, not just for the people who don't have health insurance but for those who do.