All "international socialists" look forward to the end of all social divisions (family, clan, synagogue, church) with the creation of the "Socialist Man". Thus, the creche in the kibbutz... It's the human way to fix the universe; taking the reins of the heavenly chariot.
As for Hamilton and the Whigs, they were just substituting a new directorate for the Mercantilist system they admired in the mother country. They got it, and now we fight for their freedom of action, not ours, and so the self-interest of the ruling class looks out for its own, just as Samuel said it would to the Israelites who sought a king other the the One who had led them to the promised land.
Ironically, "international socialism" has been overrun with various forms of mystical nationalism for a long time (even in the old days Communists fought wars of "national liberation" in which they labelled their side the "patriots"). The appeals to the "dark peoples" may have been originally merely an appeal to people long left out of things, but it morphed into a positive affirmation of the nationalism (including the mystical ties to the native soil) and even to the folk-religions of the "oppressed." This nature and earth worship has replaced atheism as the hammer with which many on the radical left attack the Western religions.
It is the Celtic nationalist movements that seems to unites various nationalist themes from both "left" and "right." Even the furthest Left of the Irish Republican movements, the Irish Republican Socialist Movement (which says it is not interested in liberating anyone other than "the Irish working class") nevertheless insists on a single "indigenous" Gaelic government over the entire island (including long-Protestant Ulster). How this need for an independent and sovereign island in northwestern Europe (with the foreign "occupier" kicked out) is reconciled with the abstract universalism of earlier days (which you describe so well) is beyond me.