I have never suggested and never will that Senator McCain picks his positions on national security based on politics or personal ambition. I've not suggested it because I believe that he genuinely wants to serve America's national interests.
Obama defends McCain's intentions regarding national security while asserting his own commitment to the country.
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It is a decision about how do we face and embrace this finite amount of time we have on the planet.
I think when we act on that basis, it doesn't always work out, but over time things do get better.
If I had a blame pie for why politics is so polarised and why we're seeing a rise of populism in many places, it's because of that information that is going into our brains every day.
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