My expectation would be that if we can begin discussions soon, shortly after the Iranian elections, we should have a fairly good sense by the end of the year as to whether they are moving in the right direction.

If you look at what happened, I came in the middle of the worst financial crisis since the Great Depression. And unlike Franklin Delano Roosevelt who waited, well, didn't take office until about three years into the Great Depression, it was happening just as I was elected.

I use a different style if I'm speaking to a big crowd; I can gin up folks pretty well. But when I'm in these town hall settings, my job is not to throw them a lot of red meat. I want to give them a sense of my thought process.

I have complete confidence in Secret Service. These guys and gals are unbelievably professional. They know what they’re doing and I basically do what they tell me to do. Now, sometimes I’m the first one to admit that it chafes a little bit being inside this bubble. It’s the hardest adjustment of being president, not being able to just take a walk.

It could be another election where the alignments between Republicans and Democrats are different than they were this time and who a foreign country prefers.

I know that campaigns can seem small, and even silly. Trivial things become big distractions. Serious issues become sound bites. And the truth gets buried under an avalanche of money and advertising. If you're sick of hearing me approve this message, believe me - so am I.

I don't think we should ever accept the idea that someone can come along and take away our safety and our freedom.