Or all the countries in the world would withdraw their investments in the us and cause an ecenomic collapse. Wars aren't fought through military might alone.

No country could take the US one-on-one.

I bet the combined efforts of Russia, Japan, China, etc. could easily defeat the US though.

Norway's army of 2000 soldiers would totally annihilate the whole US military and all their weapons!

I don't think anyone could go one on one, but some sort of alliance could definitely do it.

Possibly China.. you never know what they are up to but its pretty safe to assume they don't want a war with the US any more than we want a war with them.

Yeah I agree with the majority here, 1 on 1 no chance, but a group effort of Russia and China may be too much for the USA to deal with. Despite having superior technology the sheer numbers against the USA in that situation would be too much for them to handle.

This would work against those countries and cause them to also go into an economic colapse as much as it would work against the USA.  

If the British wanted a fight it would be 1812 all over again

I think USA would win.

The rest of the world would have slightly larger military forces, but the US forces are more experienced and their military would act and cooperate in a more efficient and organized manner.

Why are guys from usa so obsessed with guns/wars/miltary?
Goku would kill the so powerfull US army in a second, if one person can do it, I dont see why a country wouldnt.