As China, Russia, and the United States beat the war drums and boast about the capabilities of their armies, they should take that saying very seriously. These geopolitical juggernauts may think that they have an ace in the hole for their militaries, but there's no telling who would win in a war until the shooting starts.

In America's case, our government puts a lot of faith in its expensive high-tech military. However, for decades countries like Russia and China have been developing cheap countermeasures to our best war machines, and they may be more effective than our politicians and generals would like to admit.

Or at least, that's the takeaway from a Russian propaganda video that was released by Vesti, a media mouthpiece for the Kremlin. They claim that the Russian military has electronic warfare systems that can severely hinder the US Navy's assets, including ships, planes and missiles.