Too often, we have failed to enforce international norms when it's inconvenient to do so.

I think that what is always true when you run against an incumbent president is, is that you end up talking more about that president's record than your vision for the future, and I think that the Democrats do have to present a proactive agenda and vision for the country and not simply run against something if they're going to be successful.

There is a reason why George Washington is always one of the top three presidents, and it's not because of his prowess as a military leader; it's not because of the incredible innovations in policy that he introduced. It's because he knew when it was time to go.

We are one nation under God, and we may call that God different names but we remain one nation.

I've got certain responsibilities that I have to carry out in a very specific institution and in a specific moment in time.

The real problem, if you look at how, for example, Hezbollah got a lot of missiles that are a grave threat to Israel, it's not because they were legal, it's not because somehow that was authorized under international law; it was because there was insufficient intelligence or capacity to stop those shipments.

We do want people to know if in fact we learn of an incident that's focused on a particular city.If we learn of long-term planning, that's focused on a particular industry or infrastructure. And so we feel we have an obligation to let people know if we have information of a credible threat or not.