The Space Shuttle LKS (Russian: Лёгкий Космический Самолёт, "Light Cosmos Plane") was a Soviet Union project led by Vladimir Chelomey in response to the United States Space Shuttle. The "LKS" was smaller and cheaper than its American counterpart, but was ultimately discarded in favor of the larger Buran. Claiming that the Buran project was too big, heavy, and expensive for Russia to complete, Chelomey designed the LKS in 1979. He ordered the construction of a full-scale mock-up, as a way to further stimulate interest. The project was never fully sanctioned however, and in 1982, Chelomey was officially ordered by the Soviet government to stop any further development. In March 1983, Chelomey made yet another attempt to obtain permission to build the LKS to repel US Intercontinental ballistic missiles. This too proved futile. In 1991 the mock-up was destroyed, possibly by sabotage.