The State Department's quadrennial Diplomacy and Development Review

[Recursion]

It says "Quadrennial" but they seem to publish this "when we feel damn good and ready".

http://www.state.gov/s/dmr/qddr/

Anyways, if you want in State's own words what State is trying to do, this is a document worth reading. Particularly notable are the emphasis on climate change as the most significant threat going forward, and discussion of a "post-hegemonic" approach to US diplomacy.