The term EX-RULERS OF RUSSIA can be summarized by the crossword solution TSARS (5 letters). Tsars were the rulers of Russia from the 16th century until the Russian Revolution in 1917. They were absolute monarchs who held supreme power over the country and its people. Tsars were often seen as autocrats, ruling with an iron fist and having complete control over their subjects. The last Tsar of Russia was Nicholas II, who was overthrown during the revolution and executed in 1918.