Virote_Considon said:
The thing is, though, that the US won't get attacked from any other country full-scale. Every country is either too weak, or relies too heavily on America for economic support, which would mean that attacking the US would cripple the country more than help it.
Also, a war like this would cost a country such as China billions, with heavy military losses, and making little gain (a huge, devistated anti-occupier continent, full of millions of people, when China cannot support its own population at the moment).
Thank you for your arguments (i thought I would be banned for such post... "We're All Living in America..." (c)

).
But I think when it comes to a full scale war, nobody will consider American's financial support. I really do not know about facts, that China (for example) uses a lot of economic support from America...
China can support it's army and basic needs of it's own people during war. I do not understand about what economic support you talk, really.
And about military losses. Remember WW2? Everyone thought, that Germans will have a lot of losses attacking France...
Sheer military might of China (they can create 100 mln army) and total lack of experience of full scale war among USA generals and officers. USA simply do not have defensive doctrine in case of invasion, you know. They rely on Nukes, but in my opinion, they would not use them in case of such invasion...
Total ground war is much more different, than those wars USA participated in 20th century... Only hope to survive such invasion is to make Chinesse fight for each town, village, farm, city, valley and forest. But to do so, american citizens would have to create partisan units (a lot of such units), to disrupt all modern communication networks in USA, destroy bridges, roads, railroads... They would have to use 'partisan' tactics, but... you know... nothing personal (to those living in USA), I don't think that majority of citizens of USA will fight to the death in such a war (a lot of unhappy emmigrants, lack of united religion, lack of unity in society). They may fight for themselves, for their families, but in such war of massive destruction everyone MUST forget a word "I" or "my" and change it to "we" and "ours"
BTW, imho such war WILL be in near future, maybe in 15-20 years. And one side of this war will be USA, if they continue to use their doctrine of "world's policeman" and dictade other countries what to do. You know, resourses are not unlimited... Russia have them in abundance (whole Siberia not yet well searched for them), USA and China... They will search for extra resources. There are only to possible endings:
1. China attacks Russia, then USA attacks Russia or China.
2. USA annexes Mid-East, with help of Israel (US ally), islamic states protests, send a note to U.N., but nothing happens. China has two options - attack Russia (well protected by it's own territory) or 'help' islamic nations in their struggle against USA.
The only question is about a place of EU in these conflicts. I think that it's dependance on resourses from Russia (gas for example) will increase the chance of integrating Russia to EU, securing it's power, position and resourse-independance.