Or, maybe we just didn't want to have to fight a war to retake parts of Italy, Albania, and the various other countries surrounding Bosnia/Yugoslavia 5 years from now.
Face it, had Milosevic been "successful" in his campaign dating back to the mid-90s, that part of Europe would be even more screwed-up and dangerous than it is now, and several of our NATO allies would be DIRECTLY threatened. At which point we'd have to fight an opponent strengthened by success, with "buffer countries" between us and his own territory, and strongly allied with Russia.
So, while it's true that we generally only intervene where we have a reasonable capability to operate AND "national interest" at stake, it's also true that our national interest does often coincide with "humanitarian" considerations and "doing the right thing."
Kinda funny tho, when we DO intervene, and put some kind of a stop (or at least a slow down) to the wholesale slaughter someplace, everyone screams "hypocrite!" and no one even comments on all those OTHER countries who just sat back and watched for YEARS, and who didn't lift a finger to help, but who are perfectly willing to let the US clean up their messes for them.
Maybe Toad is right. Maybe we should just "stay home" from now on. Let a few other countries figure out just how much "blood and treasure" it takes to protect their way of life and keep them "secure."