The term 'Russian Leader of Old' can be summarized as TSAR, which is a four-letter word. TSAR was the title of the monarchs of Russia from the 15th century until the Russian Revolution in 1917. The Tsars were absolute rulers and held immense power over the country. They were responsible for making laws, appointing officials, and leading the military. Tsars were also seen as divinely appointed and were expected to act in the best interests of their people.