The Kopp-Etchells effect is rather poorly documented. It's only just been named during the Iraq/Afghanistan wars, and I haven't found too many research papers on it to date.
You know, there was a question from one of my fb pages I follow that asked, if time travel were possible what event would you visit in history and change. My response was that I'd stop or make sure Hitler were never born. And then I began thinking about it. And thought....how would that change ACME? Would we still be Anerican and international? Would we still have The united nations and NATO?