1) Absolute rulers in Russia faced religious conflicts, growing armies, and a need for taxes that led to more unrest and the monarch claiming sole power from God.
2) Ivan the Terrible ruled Russia brutally from 1533-1584, waging many wars and killing opponents, including his own son.
3) Peter the Great modernized Russia from 1682-1725 but tortured and killed his own son, and died from health complications including gangrene.
4) Catherine the Great expanded Russia's borders after a coup in 1762 and ruled until 1796, taking many lovers while neglecting the poor.