>>Does America, net, prevent more wars than it starts?<<
That information is probably within the purview of ‘Intelligence’ – State secrets, et al.
>>It's an imponderable, because prevented wars by definition don't start. Has America, since the Second World War, generally been a force for good in the world?<<
Mais oui, but of course. Even should the factors weigh unevenly, America has done more good than any other.
>>Hard to judge: would Pol Pot have happened without America's involvement in the region? Would the massacres in Indonesia? It's hard to say.<<
C’mon, Bravus, you might as well ask me if the moon is made of cheese; or if beings ever had habitation on the moon. The latter: yes.
>>What is not so hard to say is that America used to be a beacon for peace and hope and freedom in the world to many of us - it absolutely was that when I was growing up.<<
It does not matter what nation excels – there will be others who will cultivate a dislike for that nation – envy rules.
What amazes me is the flagellation I encounter amongst Americans. Oh my, we’re so evil! Ah gee, our space shots use so much energy! Waaa, I sees a pitcher of a porpuss that cried – an it waz us, did it! :-o
>>There's still some of that, but Guantanamo<<
Most were captured while directly involved in action against our forces – like, shooting at our boys and girls on the battlefield. Actually, kudos are due America for the provision of Gitmo as residence for enemy detainees. It’s kinda like Mandela – who was caught red-handed with thousands of ordinances; yet, he lived to head So Africa. Anywhere else, he would have been summarily executed. Same’s Gitmo.
>>and Abu Ghraib<<
I guess it’s my turn to say, “Oh my! the guy had his photo taken with undies on his head!"
>>and rendition<<
Happened under Reagan. That’s decades ago – and it authorizes the search, pursuit, and capture of anyone who has killed an American citizen anywhere in the world – that that perp may be made to stand trial here in the USofA. Not a bad policy. Israel’s been doing that as long as I’ve lived and no one complains. Complaints are reserved for America. [/gobsmacked!]
>>and a number of other things have definitely eroded that.<<
The incessant litany. I say to the rest of the globe, “Why are you always asking us to pull your chestnuts out of the fire, if you dislike us so...?”
>>The claim has always been to a certain amount of moral superiority - American aggression was better than other aggression because it was carried out for the common good and with a moral code.<<
Not always the epitome of
genteelness; however, when they call – we’s there – and we pay the price. No whinin’, mewlin’, or otherwise whizzing our pants... God Bless America

>>That is what has been lost.<<
That certain Freudian envy. You can’t fight that. Even the V-pill won’t help.
>>Maybe American aggression was always just aggression, but it has been particularly naked during the first decade of the new century.<<
Hey, I’m not that indisposed to a certain bit of Imperialism. Check India. They still have the British hospitals, the same rails, the same strung wire lines, the same architecture, the same governing system, the same... India benefited and still does. Likewise, with American 'Imperialism'. Most of the modernization of the Far East is due to our own sacrifice and generosity.
>>(Leaving aside what I hope is a certain amount of jest from jasd when he suggests there is no relevant standard for America but brutish and unenlightened self-interest.)<<
When I need help I want the 800 pound gorilla, juiced and mean on my side. That used to be us. Sadly, for the rest of the civilized world that is coming to an end.
Every job I ever had was provided by the enlightened self-interest of this or that person, company, or corporation.

Do you think Australia is going to do more for the indogenes - other than holding a "Sorry" day? y'know like giving them back their continent?
Would I be unwise to hold my breath?