No matter how long it takes, the United States will find and bring to justice the terrorists who are responsible for Kayla's captivity and death, ISIL is a hateful and abhorrent terrorist group whose actions stand in stark contrast to the spirit of people like Kayla.

You know, one of the things I think you understand as president is you're held responsible for everything, but you don't always have control of everything, right?

Now we're in the midst of not just advocating for change, not just calling for change - we're doing the grinding, sometimes frustrating work of delivering change - inch by inch, day by day.

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.

You have people around the country who are benefitting from the steps that we've taken [with Obamacare] and as long as they continue to get helped, then at least I'll know in my own mind that the work we did here had a lasting impact.

In the midst of economic recovery and global upheaval, disasters like this remind us of the common humanity that we share.

Think about it: Iran, Cuba, Venezuela - these countries are tiny compared to the Soviet Union. They don't pose a serious threat to us the way the Soviet Union posed a threat to us.