On the 4th of July (ironically), Julia Gorin, as a part of a lengthy (to say nothing of long-winded) attempt at defending the opportunistic Draza Mihailovic, published in her "GLOB" some correspondence she had received from Arthur "Jibby" Jibilian, a US airman rescued by his men and returned to the Allies, and who for the past 60 years or so has been trying to "clear" Mihailovic's name. I don't know if Mr. Jibilian's opinion has changed in the past 8 years (unlike some, this blog does not go around quoting 8 year old articles as if they are current, and none of the facts in them have changed in the intervening years due to more complete knowledge than was available at the time), but at least this is how he felt in 1999 about whether "good deeds" done in the past give one a pass to do evil ones in the present:
"I love the Serbs," said Jibilian, 75, a retired industrial safety director. "I owe them my life. Five hundred American airmen owe them their lives. The bombing of Serbs -- I find that very hard to accept." "But right is right and wrong is wrong. And as much as I love the Serbs," Jibilian said, "what they're doing now," in driving Albanians from their homes, "is wrong."
-Minneapolis Star Tribune, 25 April 1999 (Sunday)
Mr. Jibilian (at least as of April 1999) had it right.