NATO Cruise missile attack threat to Russia

Russia boosts air defense in face of US Prompt Global Strike capacity



http://rt.com/news/246869-global-strike-missile-defense/

The huge irony is that the US is trying to achieve an unobtainable capability... being able to hit a target within one hour of deciding it is a threat either means it is a space based weapon that orbits the earth every 90 minutes with about 36 of these satellites offering the ability to hit anywhere on earth within the hour, or it is going to need to be earth based and more than 72 bases all over the planet because launching from the surface of the earth takes more time and more energy than falling from space...

The sad fact is that when they achieve it they will find that Russia will have developed the same capability and a means to defeat the US model and who knows what the Chinese will have done by then...

In other words escalation where escalation is not needed or wanted.

How do Russia tracks any incoming low flying cruise missile ?