Original sentence: After graduating from law school in 1975, he served in the KGB for 15 years, rising to the rank of lieutenant colonel.From 1990 to 1996 he held several posts in the Leningrad (from 1991, St.Moving to Moscow and the national government in 1996, he held high staff positions in the Yeltsin administration and in 1998 became head of the Federal Security Service (FSB), the KGB's successor.Petersburg) city government.Putin was chosen by Yeltsin to succeed Sergei Stepashin as prime minister in August, 1999.Vladimir Vladimirovich Putin ( ) (born October 7, 1952, in Leningrad, Russian Soviet Federative Socialist Republic, Soviet Union) was the second President of the Russian Federation
Edited sentence: Vladimir Vladimirovich Putin ( ) (born October 7, 1952, in Leningrad, Russian Soviet Federative Socialist Republic, Soviet Union) is a Russian politian best known for his service as a President of Russia