(S (S (BASENP (NNS Prosecutors)) (VP (VBP say) (SBAR (IN that) (S (BASENP (PRP they)) (VP (VBD had) (VP (VBN been) (VP (VP (VBN commanded) (PP (IN by) (NP (BASENP (NNP Russia) (POS 's)) (BASENP (NNP Foreign) (NNP Intelligence) (NNP Service))))) (COMMA ,) (PP (IN with) (NP (BASENP (DT the) (NN mission)) (PP (IN of) (S (VP (VBG collecting) (NP (BASENP (NN information)) (PP (IN about) (BASENP (JJ American) (NN policy)))))))))))))))) (PERIOD .))