In 1784, he commanded Russian troops in Crimea and took the last Crimean khan Russo-Swedish War of 1788--90 and was empowered to sign the Treaty of Värälä on behalf of Russian Empire in 1790.
He commanded Russian troops in Crimea. This was in 1784. He took the last Crimean khan Russo-Swedish War of 1788--90. This was in 1784. He was empowered to sign the Treaty of Värälä on behalf of Russian Empire in 1790. This was in 1784.