I didn’t realize that. I had read that about 40% of married men and 25% of married women had extramarital affairs.
Whatever the true percentage is, I think we should realize that absolute monogamy for everyone is not a realistic assumption because of the power of human sexuality.
And male political/social/military leaders throughout history are probably more likely than others to indulge, probably because their perceived celebrity and power makes them more attractive to the opposite sex.