What you’re asking for is Star Trek and The Federation. The military(only speaking for the US) isn’t equipped or trained for nation building. It is by nature the “big stick” Teddy Roosevelt was referring to. The state department is the diplomatic arm of the US government. They should be the ones forging all those ties and teaching people outside the US how to be self sufficient and sustainable.

Honestly I wish the US military was more like The Federation. I’d join back up in a heartbeat.