if there's gonna be a WW3 i think kamran has it totaly wrong.
with the recent aggressive actions by Russia in Georgia i do believe that Russia would not be an ally. With the US putting in the anti-nuke machine thingy in Poland im sure russia feels very threaten. Next WW will be a weapons struggle and heres how i see it.
US does something dumb to piss Russia off and Russia takes over some remote US controlled island or something. US ignores it and trys to talk about it. that dosnt work so the US waits till it can get UN help to fight off russia and gets UK France and other ussless such nations to aid against russia. Russia now out numbered seeks help from low life nations such as iran pakistan and North korea. US gets japan and we call it a war.
US is losing so they ask the mexicans to join and the mexicans turn the tide and win the war
all but that last part was for real