(/s)
If you have no defense, then you have no defense. If that's how you want to live, don't hide behind some other argument.
You'll have something that someone else wants or needs and they're going to club you over the head for it. You seem to be okay with that. That's cool, but I'm not. I'm for damned-sure going to have a better club or preferably a knife or a gun as a) a deterrent, or failing that b) a way to improve my odds of survival.
But we know that diplomatic corps don't get even a pittance of the funding that the warrior hordes do ..
You've got a very naive view of the world.
If you think there are "no carrots" offered by the US, you're a silly person living in a fantasy world. Clearly there are carrots because the US has lots of positive diplomatic relationships with a pretty large percentage of the world's countries.
We don't do this through having a boot on everyone's neck. We don't live in some fantasy story where the US is "The Great Evil".
Developing weapons for your country is anti-war too.