First off, don't really need to get lectured on the idiocy that went on during the Cold War days, I watched the duck and cover film on You Tube just the other day. Or better yet, the notes sent home from school, "What do you want us to do with your son or daughter in case of Nuclear Attack"? A. Send them home. B. Keep them sheltered in place at school.
And NO, not saying we learned from our mistakes, I guess if you call "learning" somewhat stopping direct support of really bad guys after 1000's had been killed, and hundreds of thousands displaced . . . than okay. A mild golf clap for "learning from mistakes".