alt Hacker NewsThere are indeed actors who only respect might. That is not universal. Preaching might is right is also not universal.
It is still important to have might even if you aren't in that camp because inevitably you will run into people with that worldview and they cannot be reasoned with without might.
Military might is the thing keeping the USD the world reserve currency instead of the GBP, EUR or Yuan. It's literally the core keeping the US economy and prosperity.
And things don't have to be universal to be true, but just one leader/nation bombing or abusing the shit out of you is all you need to teach you this lesson, and waving the Geneva convention in their face won't help you.
The real world is harsh, unfair and unjust and pieces of paper named after European cities don't change that. A barrel in your hand pointed at them does. The ability to use force is the only thing in history that was guaranteed to change things in your favor.