[roflyear]

It can make logical sense, in game theory. For example, you can have two situations:

A) thing A is the most beneficial thing for person A to do

B) thing A benefits person B way more than person A

These are not mutually exclusive.

I'm not exactly arguing for this (I'm not sure if the US or its allies benefits more, and we'd have to define what "benefits" means and "who" benefits etc.. etc.. etc..) I'm just saying this is very obviously possible: where the US having a huge military is the best thing for the US, and also its allies benefit from this MORE than the US benefits from it.