The fundamental premise is that neither the United States or the international community is going to allow Iran to develop a nuclear weapon.

Clearly, Russia has lied to the world about what's going on in Ukraine. They have clearly violated the cease-fire agreements.

The reason we've always had a civilian in that job [Secretary of Defence] is because we really believe that it is policymakers who ought to control the military and not have the military control the military.

One of the principal qualities that you need as national security adviser is trust, the trust of the president. And that depends on truth and it depends on honesty.

Caution is an important quality in a leader, but it has to be caution followed by decision. Caution followed by ambivalence can be a weakness.

The political and substantive reality is that the agenda has to change. I don't think they have any choice.

In this century, the 21st century, the U.S. recognizes our prosperity and our security depends even more on the Asia-Pacific region.