Stalking the truth
2012-01-30 18:27:16 UTC
First, with satellite imagery, there would be no chance of a sneak attack. Even if they just start mobilizing forces, we would know and could take defensive or offensive measures.
Even if they could some how mount an attack, say by knocking out our satellites and somehow neutralizing our nuclear capabilities, forgetting for a moment all the nukes we have on subs, they would need a massive armada, many times larger than the Normandy invasion. This is unless they did a northern invasion from Russia through Alaska and Canada and finally to mainland USA. I’m not even sure it would be possible to move an army like that through the arctic. It certainly would be no fun. All during this invasion, they would have to contend with our air attacks. It is highly doubtful that China and Russia combined would be able to achieve air superiority. In a naval attack, you would also have subs and battleships to contend with. Either way, the invading force would be decimated.
If they did manage, somehow to get their army to the continental U.S., they would still have a massive ground fight on their hands versus our military and national guard. In the unlikely event they would be successful at defeating our military, they would need an enormous occupation force. The standard troop density for occupation is 20 troops per 1,000 population. This would mean the occupation force would have to be at least 15 million troops. The cost of this occupation force would be astronomic. The cost of our occupation troops in Iraq is about $615 per day per troop. Even if they did it extremely cheaply, say $50 per day per troop, that’s still $22 billion per month. This would quickly cripple the economies of both China and Russia.
Also, even if they were able to pull all this off, we still would have subs out there with nuclear missiles that could be launched in retaliation. We also have other countries allied with us that would also retaliate.
Given this and many other factors, my conclusion is that it is impossible for a foreign power to successfully invade and occupy the U.S.