"One of the largest militaries in the world?" Are you actually for real right now?
The US spends more on the military than the next 9 countries combined! Obviously, anyone sane who's in the US's crosshairs is going to desperately try to muster whatever military strength they possibly can, for fear of invasion! Which the US has done, not only generations ago before any of us were born, but with a full scale invasion and decades-long occupation in living memory, ending only a few years ago! Before going straight into attacking Iran, with no provocation!
Jesus Christ, you imperialists are completely nuts! What is it about militaristic, authoritarian empires that makes you completely abandon any sort of reasoning or common sense, and start acting like a tiny hermit country halfway across the world that hasn't been in a conflict for 70 years is somehow a threat to the most powerful and militaristic country on earth? It's completely ridiculous.
Fucking, Rome had more plausible arguments for "defending itself" when they conquered Gaul!
You just keep licking the boot of the US government and accepting every bullshit justification it gives as it expands to every corner of the world, until it collapses on itself from the overextension, until the fascists take advantage of the decline and seize power at home, and when we're both being matched into the gas chambers, I'll ask you again whether fucking North Korea was really the threat we needed to be worrying about.