Is There a War in the 20th Century?

Main belligerents would be yu russia and china on one side, and the united states and a series of allies on the other side. I just think most allies don't want to be directly involved in the shooting. Australia now, through acchus, is going to acquire these long range antiship missiles that could actually make it a player down in south east Asia. And then if this becomes a protracted war, which iactually think will happen, you might even see australia come into the mix. A if this conflict really is as bloody and big as i fear it could be,  I'm on the us Side.