Umm, The cold war never ended. It has waxed and waned, and it has rotated into economic, information, and mimetic warfare over the decades. The US government and NATO have been investing in our military for decades for more reasons than just corruption.
The only real surprise here is that Russia/Putin has decided to light some sparks on the kerosene laden mess to drive it hot. Nobody wants a hot war in an industrialized nation, our weapons and our defenses are too effective to "take" anywhere without destroying all the infrastructure that makes it valuable. Armed conflict in industrial nations will yield only pyrrhic victories.
The only real surprise here is that Russia/Putin has decided to light some sparks on the kerosene laden mess to drive it hot. Nobody wants a hot war in an industrialized nation, our weapons and our defenses are too effective to "take" anywhere without destroying all the infrastructure that makes it valuable. Armed conflict in industrial nations will yield only pyrrhic victories.