Via BuzzFeed, an interesting report on what Barack Obama in 2004, then a Senate candidate, said about the Iranian issue in the Chicago Tribune:
[T]he United States should not rule out military strikes to destroy nuclear production sites in Iran, Obama said.
"The big question is going to be, if Iran is resistant to these pressures, including economic sanctions, which I hope will be imposed if they do not cooperate, at what point are we going to, if any, are we going to take military action?" Obama asked.
"In light of the fact that we're now in Iraq, with all the problems in terms of perceptions about America that have been created, us launching some missile strikes into Iran is not the optimal position for us to be in," he said.
"On the other hand, having a radical Muslim theocracy in possession of nuclear weapons is worse. So I guess my instinct would be to err on not having those weapons in the possession of the ruling clerics of Iran. ... And I hope it doesn't get to that point. But realistically, as I watch how this thing has evolved, I'd be surprised if Iran blinked at this point."
Perhaps some of the facts have changed. And perhaps the president's own position has changed since then. But one thing hasn't: Iran's quest to obtain nuclear weapons capability.