Near the end of this leader's life, he tried to arrange a marriage with English princess Mary Hastings.
Near the end of this leader's life, he tried to arrange a marriage with English princess Mary Hastings. In military matters, he created a new unit of musketeers, the streltsy, and defeated the Khanates of Kazan and Astrakhan in 1552 and 1556, respectively, but then became bogged down in the long Livonian War. This son of Vasily III and husband of Anastasia Romanov killed his son in a fit of rage, although he may be best known for his oprichnina, a campaign of state terrorism mostly aimed at the boyar nobles. For ten points, identify this imposing and unstable Russian tsar.
Near the end of this leader's life, he tried to arrange a marriage with English princess Mary Hastings.
{Ivan IV} (or {Ivan the Terrible} or {Ivan }{Groznyi})