<<No one who uses this parable shoud fail to have the humility to admit that it can apply to self.>>
The parable is not meant to apply to everyone. Some people go around pointing their fingers at everyone but themselves and others don't.
In your case you were blaming America's victims - - the VC were the cause of Viet Nam's suffering (although they hadn't invaded America, America had invaded them!) just as the Afghans are responsible for the suffering of Afghanistan (although, again , it was the U.S. that invaded Afghanistan and not the other way round,) the Cold War was the fault of the Soviets - - even though, with regard to Poland, they were only exercising their Yalta rights, agreed to by the Allied Powers at Yalta, and their occupation of most of the rest of Eastern Europe was merely theirs by right of conquest after those countries had invaded them first, the Middle East turmoil is all due to one "nutzy Saudi" and is not related in any way to your perpetual interference in the internal affairs of regional governments, enabling the Israelis to occupy the West Bank for 40 years, subsidizing the Egyptian and Jordanian torture states, overthrowing elected governments and invading Muslim lands.
You are the perfect object of the parable - - pointing your finger everywhere and ignoring your own country's many, many, many faults.