He is thought to have caused the death of Czarevitch Dmitri during Fyodor I's reign in order to prepare his path to the throne, which he attained in 1598, but his reign was weakened by the opposition of the false Dmitri.
As regent this leader defeated the Crimean Tatars, regained previously lost lands from Sweden, and recolonized Siberia. He is thought to have caused the death of Czarevitch Dmitri during Fyodor I's reign in order to prepare his path to the throne, which he attained in 1598, but his reign was weakened by the opposition of the false Dmitri. FTP, who was this tsar, the subject of a Pushkin play and Mussorgsky opera?
As regent this leader defeated the Crimean Tatars, regained previously lost lands from Sweden, and recolonized Siberia.
Boris Godunov