I don't think there was anything jingoistic about this proposal at all. It was to be undertaken not in a mood of nationalistic exaltation, to show the world what a wonderful country the US is, but rather as a dirty job that needed doing to prevent avoidable human suffering.
I don't agree with Jonah about the advisability of such action. Frankly, I suspect he proposed it primarily to stimulate wholesome debate about what could be done about the deterioration of Africa, which is an undeniable fact. It was quite successful in this regard. (Not that anybody has noticed Africa since September.)
I believe that one long-term result of the present war will be some form of (disguised) recolonisation of much of the third world.
Ha. I was just about to comment that the sorry state of the British intelligentsia in late 40's, described by Orwell, is directly responsible for their willful and outright criminal abandonment of the British Empire. We may end up recolonizing the Third World just to pick up the mess that Orwell's masochistic nationalists had left.
Ayn Rand might have something to say about that
An invasion of a nation that has no representative government is just: Defense of Liberty: Just Intervention