Generally, I do not find Politico to be a great source for geopolitical analysis and data, but here is one exception - a handy map of U.S. military bases, smaller deployment platforms and unconfirmed deployment platforms worldwide:
Thirty years after the end of the Cold War, one country remains completely and comprehensively surrounded by the U.S. military deployment platforms (and these exclude non-U.S. Nato platforms): Russia.
The map does not show the U.S. navy and airforce reach zones, nor does it include Nato's non-U.S. troops bases.
Some 'Peace Dividend' this is, especially given the threat rhetoric from Washington. And any wonder, Russian geopolitical stance remains that of a country under the siege?
Source for the chart: https://www.politico.com/magazine/story/2015/06/us-military-bases-around-the-world-119321.