In an interview with the New York Times's Tom Friedman, President Obama defined his very own doctrine. It is, in short, "We will engage, but we preserve all our capabilities."
"We are powerful enough to be able to test these propositions without putting ourselves at risk. And that’s the thing ... people don’t seem to understand," Obama told Friedman.
"You take a country like Cuba. For us to test the possibility that engagement leads to a better outcome for the Cuban people, there aren’t that many risks for us. It’s a tiny little country. It’s not one that threatens our core security interests, and so [there’s no reason not] to test the proposition. And if it turns out that it doesn’t lead to better outcomes, we can adjust our policies.
"The same is true with respect to Iran, a larger country, a dangerous country, one that has engaged in activities that resulted in the death of U.S. citizens, but the truth of the matter is: Iran’s defense budget is $30 billion. Our defense budget is closer to $600 billion. Iran understands that they cannot fight us. ...
"You asked about an Obama doctrine. The doctrine is: We will engage, but we preserve all our capabilities."