Original: According to an official "White Paper" report compiled and released by the Russian government in March 1993, the Soviet Union dumped six nuclear submarine reactors and ten nuclear reactors into the Kara Sea between 1965-1988.
Simplified: Problems There is concern about the levels of nuclear waste the former Soviet Union dumped in the sea which included six nuclear submarine reactors and ten nuclear reactors, and the effect this will have on the marine environment.