Dan Goure
In war, dominance of the air confers almost incalculable advantages on the side that achieves it. The ability of the U.S. military to exploit the air domain has been a signature feature of the so-called Western Way of War for almost three-quarters of a century.
But America’s hard-won ability to dominate the third dimension is being challenged as never before. Our adversaries have long realized that the key to deterring or defeating the U.S. and its allies is to deny air superiority. The massive investments in so-called anti-access and area denial capabilities, particularly by Russia and China, is a testament to how much they fear U.S. air power.
http://nationalinterest.org/blog/the-buzz/the-greatest-threat-today-us-air-superiority-may-be-the-22500