not all movers & shakers of WWII died at war's end

In fact most didn't.

That was because most of those movers and shakers had come of age in the Edwardian Era and thus were born between about 1890 and 1905, so in 1945, they still had a long way to go before retirement.

In addition, the frightened cautious period between 1945 and 1965 was a time in human history when the postwar power elite, in almost all aspects of life, were almost unbelievably old ---- as a check on most nations' top leader in that period will quickly confirm !