RFE/RL: 18 years of Putin (Infographic)By Radio Free Europe/Radio Liberty. Published Dec. 7, 2017 at 11:07 am A woman walks past a painting depicting Russian president Vladimir Putin at the "SUPERPUTIN" exhibition at UMAM museum in Moscow on Dec. 6. Photo by AFPPresident Vladimir Putin is the longest-serving Russian leader since Josef Stalin.Here’s how he compares with some other world leaders.