They had planned both a Lunar Landing and a Mars and Venus flyby, but the rocket they would have used, the N1, exploded every time it took off, owing to a questionable design, and the fact that after Sergei Korolev died, the man who was most responsible for the early Soviet successes, the programme fell to his less talented deputy, who couldn't convince Brezhnev and the Politburo to do the things that Korolev could. Eventually the programme fell under the control of Valentin Glushko, who fired Mishin, scrapped the N1 Rocket (which he did not like), and then moved to focus on the Soviet Buran shuttle (a failure), and the various Space Stations and other Soviet missions using the Soyuz, Proton, and other rockets.