As a nuclear power - as the only nuclear power to have used a nuclear weapon - the United States has a moral responsibility to act.

I believe in evolution, scientific inquiry, and global warming; I believe in free speech, whether politically correct or politically incorrect, and I am suspicious of using government to impose anybody's religious beliefs -including my own- on nonbelievers.

As long as I'm president of the United States Iran will not get a nuclear weapon. I made that clear when I came into office.

If you look at Libya, I was deeply concerned about what would happen after Qaddafi was gone.

It ought to concern every person, because it is a debasement of our common humanity. It ought to concern every community, because it tears at our social fabric. It ought to concern every business, because it distorts markets. It ought to concern every nation, because it endangers public health and fuels violence and organized crime. I’m talking about the injustice, the outrage, of human trafficking, which must be called by its true name - modern slavery.

I didn't become a Christian until many years later, when I moved to the South Side of Chicago after college. It happened not because of indoctrination or a sudden revelation, but because I spent month after month working with church folks who simply wanted to help neighbors who were down on their luck no matter what they looked like, or where they came from, or who they prayed to. It was on those streets, in those neighborhoods, that I first heard God's spirit beckon me. It was there that I felt called to a higher purpose - His purpose.

International inspectors are on the ground and Iran is being subjected to the most comprehensive, intrusive inspection regime ever negotiated to monitor a nuclear program. Inspectors will monitor Iran's key nuclear facilities 24 hours a day, 365 days a year. For decades to come, inspectors will have access to Iran's entire nuclear supply chain. In other words, if Iran tries to cheat - if they try to find build a bomb covertly, we will catch them.