Manned orbital mission to Mars will commence in 2021

Russian Federal Space Agency :
"Mars Piloted Orbital Station (or MARPOST) is a Russian concept for a manned orbital mission to Mars, with several proposed configurations, including using a nuclear reactor to run an electric rocket engine. A 30-volume draft proposal was produced in 2005.[1] The design for the proposed ship was planned to be ready in 2012, and the ship itself in 2021."