The always brilliant Victor Davis Hanson sheds some light on liberal internationalism. I think his insight into the leftist mind also holds true regarding domestic affairs.
Or is it a deeper malaise that modern liberal internationalism is neither liberal nor international. Lacking any real belief that the United States, now or in its past, has been a continual force for good, the contemporary Left hardly wants the rest of the world to suffer the American malaise of racism, sexism, homophobia, environmental degradation, and consumerism. That self-doubt is buttressed by the idea as well that confrontation is always bad, that evil does not really exist, but is a construct we create for misunderstanding, that the world’s ills are remedied by reason and dialogue.
In essence, the progressive Leftist is often affluent, insulated from the savagery about him by his material largess, and empathizes with those who are antithetical to the very forces that made him free, secure, and prosperous—as a way to assuage the guilt, at very little cost, of his own blessedness.
Then the leftists dupe those who they (generally wrongly) believe they have victimized into joining together to make them victims in truth.