(S (S (BASENP (DT The) (NN arrest)) (VP (VBD came) (PP (IN at) (NP (BASENP (DT the) (NN request)) (PP (IN of) (NP (BASENP (NNP U.S.) (NNS officials)) (SBAR (WHNP (WP who)) (S (VP (VBP claim) (SBAR (S (BASENP (PRP he)) (VP (VBD stole) (NP (NP (QP (ADVP (RBR more) (IN than)) (BASENP (NN nine) (NN million))) (NNS dollars)) (VP (VP (VBN allocated) (PP (IN by) (BASENP (NNP Washington)))) (S (VP (TO to) (VP (VB help) (S (VP (VB improve) (BASENP (JJ Russian) (JJ nuclear) (NN safety))))))))))))))))))))) (PERIOD .))