David Vine, “Where in the world is the U.S. military?”, Politico, July/August 2015: https://www.politico.com/magazine/story/2015/06/us-military-bases-around-the-world-119321/ .
Quote: “Despite recently closing hundreds of bases in Iraq , and Afghanistan, the United States still maintains nearly 800 military bases in more than 70 countries and territories abroad—from giant “Little Americas” to small radar facilities. Britain, France and Russia, by contrast, have about 30 foreign bases combined. By my calculation, maintaining bases and troops overseas cost $85 to $100 billion in fiscal year 2014; the total with bases and troops in warzones is $160 to $200 billion.”