Though yes, the United States has the most highly trained troops, this is not to say Russia is totally outgunned; Spetsnatz, Black Sea Marines, etc. are not something to forget... that, and Russia has a very large conscripted force that dwarfs many militaries.

Also, you left out China, one of the current world super powers, who's army is ENORMOUS. Shear amount of people in a war that lacks nukes(however you explain that) would hold a huge advantage, especially with UN countries forbaying the use of chemical and biological weapons...

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It was Kovacs who closed his eyes.
It was Rorschach who opened them again." -Rorschach