Your problem is that you perpetually want to assign sinister motives to the US.
You guys are big, armed to the teeth, and now you are run by what I and half the planet thinks is a nut job. We have to take you guys seriously, and never relax - you are benign when our interests align and flaming dangerous when they do not. The Australian government figures that overall going with the US has an overall benefit, but that doesn't mean we citizens agree.
I do not think the US has "sinister" motives - just self-interested ones that can be harmful to others.