The world's legal polonium-210 (210Po) production occurs in Russia in RBMK reactors.
Court's findings were consistent with those of the UK inquiry; it ruled that "the assassination had been carried out by" Andrey Lugovoy and Dmitry Kovtun; that there was "prima facie evidence of russian state involvement" and that there was a "strong" case that the two assassins were acting as agents of the Russian State; and that Russia had failed to investigate the murder or to identify and punish those responsible. The Court drew an adverse inference from Russia's refusal to disclose any documents from its investigation. The Court noted that the "planned and complex operation involving the procurement of a rare deadly poison, the travel arrangements for the pair, and repeated and sustained attempts to administer the poison indicated that Mr Litvinenko had been the target of the operation."