page_title: Yeniseysk-15
section_title: Controversy
hierarchical_section_title: Yeniseysk-15 / Controversy
context_page_description: Yeniseysk-15 was the site of a disputed Soviet phased array radar near Yeniseysk in Krasnoyarsk Krai, Siberia. The never operational Daryal radar installation was demolished in 1989 after the United States claimed it was in breach of the Anti-Ballistic Missile Treaty.
context_section_description: The Soviet Union announced that the new radar was for space surveillance rather than for early warning of missile attack, and hence was compliant with the ABM treaty. The radar was given the designation OS-3 (OS-1 was Mishelevka and OS-2 Balkhash) rather than an RO- designation which would be associated with an early warning site. However the radar appeared to be a Daryal radar which were used for ballistic missile early warning as well as space surveillance.
  The United States complained and construction was halted in 1987. In 1989 the Soviet Union admitted that it was a breach of the treaty and it was demolished.
caption: Map of the Russian Far Eastern Federal District showing the location of Yeniseysk and the proposed sites of Norilsk and Yakutsk.