The RSD-10 Pioneer (Russian: ракета средней дальности (РСД) «Пионер» tr.: Raketa Sredney Dalnosti (RSD) "Pioner"; English: Medium-Range Missile "Pioneer") was an intermediate-range ballistic missile with a nuclear warhead deployed by the Soviet Union from 1976 to 1988. It carried GRAU designation 15Zh45.