Ofcorse it's possible to invade the USA.
For example, i am sure that Russia could do that.
I don't think so, 1st Russia doesn't have that kind of budget, for the global war
It easy, If you want to use nuclear weapons than this is what you have to do:
1. make a nuke strike on all the major cities and military bases. (Russia has nuclear missiles which are very hard to intercept).
America also has Nukes, bigger and better, and faster. If You mean at TopolM it's speed is 6M, while American have speed of 20M, Topol has 1mton warhead, while peacemaker from 60's has 11 warheads each with 300kiloton. And with brand new ABL, I don't think it can evade laser beam....
2. Move in with land forces that have anti radiation sutes (Russian tanks have NBC protection. NBC= Nuclear, Biological, Chemical). and clame the teritory yours.
Abrams also have that, plus is much better...
If you do not wish to use nuclear weapons than this is what you have to do:
1.Start the attack by bombarding cities and military bases with naval artillary (guns and cruise missiles). Use submarines and other ships to fight the USA navy.
You forget that USA also have everything like that only in bigger numbers.... And USA would also strike with Nukes, which would leave Russia totally devastated.
2. send in fighters to intercept the american fighters (when an air battle game was made in india, indian pilots using Russian fighters fought against USA pilots using USA fighters. The result: india won 90%of the battles. when a nother game like that was made in Alaska, Russian pilots using Russian planes fought against USA pilots using USA fighters. Russia won 100% or all the battles! The pentagon even said that Russian fighters where better than that of the americans). Also use AAA from your ships.
3. When your fighters controll the sky use ground attack planes to destroy AAA (AAA=Anti Aircraft Artillary) and heavy bombers to bomb cities and military bases or ground targets.
Yes we dicussed cope India, 12:4.... It's unfair, but there's another possibility, look at this thread for more info, again I don't agree Russian jets are better.... They are good but not better than American
http://www.military-quotes.com/forum/viewtopic.php?t=2707
4. land your troops on shore and fight the remaning USA troops on the ground. USA troops won't stand a chance against you (Russian tanks are much better than USA tanks and Russian tanks are in much larger numbers. And since you rule the skies, you can use your gunship helicopters and ground attack planes to help you. You can also use artillary to help you.
Yes they are in larger numbers, BETTER??!!!!!!!!!!!!! What the hell? They are not better, please say why, or is it your patriotism "little" bit of involved......... :roll:
And if USA supporters like UK try to help, than you could always use your supporters to help you.
So you see, the all mighty USA dosen't seem mighty anymore.