In the speech, President Obama made his bottom-line explicit:
Here’s my bottom line: America must always lead on the world stage. If we don’t, no one else will. The military that you have joined is, and always will be, the backbone of that leadership. But U.S. military action cannot be the only — or even primary — component of our leadership in every instance. Just because we have the best hammer does not mean that every problem is a nail.
This approach seems to include American leadership on addressing the national security risks of climate change, which President Obama also made explicit:
That spirit of cooperation needs to energize the global effort to combat climate change, a creeping national security crisis that will help shape your time in uniform, as we are called on to respond to refugee flows and natural disasters, and conflicts over water and food, which is why, next year, I intend to make sure America is out front in putting together a global framework to preserve our planet.
You see, American influence is always stronger when we lead by example. We cannot exempt ourselves from the rules that apply to everyone else. We can’t call on others to make commitments to combat climate change if a whole lot of our political leaders deny that it is taking place. We can’t try to resolve problems in the South China Sea when we have refused to make sure that the Law of the Sea Convention is ratified by the United States Senate, despite the fact that our top military leaders say the treaty advances our national security. That’s not leadership. That’s retreat. That’s not strength; that’s weakness. It would be utterly foreign to leaders like Roosevelt and Truman, Eisenhower and Kennedy.
I believe in American exceptionalism with every fiber of my being. But what makes us exceptional is not our ability to flout international norms and the rule of law; it is our willingness to affirm them through our actions.
The full transcript of the speech is available here.