"When it comes to what might be called the "philosophy" of foreign policy -- the relationship of U.S. power and policy to broader historical and cultural trends -- no statesman of Brzezinski's generation is in his league."
“Power” in many cases can mean an important country. In the above case, does it mean US as a country, or the power of US (economic, military, etc. power)? Can one say “US power and its policy”, in which US Power can only mean a country ?
Here it means "economic/military/etc. power".
When "power" means "important country", it's always countable, e.g.
1. Brazil has emerged as a dominant power in the southern hemisphere.
2. There is considerable debate as to which nations constitute the great powers of the world.
All the best,