(SINV (SINV (S (NP (BASENP (DT The) (NN absence)) (PP (IN of) (BASENP (DT the) (NN waiver)))) (VP (MD could) (VP (VB have) (VP (VBN led) (PP (TO to) (NP (BASENP (DT an) (JJ embarrassing) (NN situation)) (SBAR (WHADVP (WRB where)) (S (NP (BASENP (NN progress)) (PP (IN on) (S (VP (VBG dismantling) (NP (BASENP (NNP North) (NNP Korea) (POS 's)) (BASENP (JJ nuclear) (NN program))))))) (VP (MD would) (VP (VB have) (VP (VBN been) (VP (VBN delayed) (PP (IN because) (PP (IN of) (BASENP (DT a) (NN technicality)))))))))))))))) (COMMA ,) (SINV (VP (VBD said)) (NP (BASENP (NNP Leonor) (NNP Tomero)) (PP (IN of) (NP (BASENP (DT the) (NNP Center)) (PP (IN for) (NP (BASENP (NNPS Arms) (NNP Control)) (CC and) (BASENP (NNP Non-Proliferation))))))))) (PERIOD .))