A beast, not a son!
Зверь, а не сын!

Politicians
Peter the Great
Tsar of Russia (r. 1682-1725). Six foot eight, an autocrat who worked as a Dutch carpenter under a false name. He won the Great Northern War, founded Saint Petersburg, declared the Russian Empire, and killed his son.
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Source: 皇太子アレクセイ事件に関するピョートルの発言 (Соловьёв『История России』に伝承)Unverified