RSD-10 Pioneer

RSD-10 Pioneer SS-20 Saber
RT-21M Pioneer missile and launcher on display in Vinnytsia
Type	Intermediate-range ballistic missile
Place of origin	Soviet Union
Service history
In service	1976 – 1988
Used by	Soviet Strategic Rocket Forces
Production history
Designer	Alexander Nadiradze (Moscow Institute of Thermal Technology)
Manufacturer	Votkinsk Machine Building Plant
Specifications
Mass	51,900 kg (114,400 lb)
Length	21.5 m (71 ft)
Diameter	2.18 m (7 ft 2 in)
Warhead	1 x 1 Mt or 3 x 150 kt
Engine	Two-stage solid-fuel rocket[1]
Operational range	5,800 km (3,600 mi)
Maximum speed	Up to 7.43 km/s
Guidance system	Inertial
Accuracy	150-450 m CEP
Launch platform	Road-mobile TEL

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 15Ж45 (15Zh45). Its NATO reporting name was SS-20 Saber.

Its deployment was a major cause of NATO's 'Double-Track Decision', which led to the deployment of more medium-range nuclear weapons in Western Europe. The RSD-10 was withdrawn from service under the 1987 Intermediate-Range Nuclear Forces Treaty.