(S (S (BASENP (DT The) (NNPS Iranians)) (VP (VP (VBP have) (VP (VBN been) (PP (IN under) (NP (BASENP (JJ international) (NN pressure)) (S (VP (TO to) (VP (VB withraw) (PP (IN from) (NP (BASENP (PRPD their) (NNS plans)) (PP (IN of) (S (VP (VBG achieving) (BASENP (JJ nuclear) (NN proficiency)))))))))))))) (CONJP (COMMA ,) (CC but)) (VP (VP (VBP have) (VP (VBN rejected) (S (VP (VP (VBG putting) (BASENP (DT a) (NN hold))) (PP (IN on) (BASENP (PRPD their) (NN program))))))) (CC and) (VP (VBP have) (VP (ADVP (RB also)) (VP (VBN been) (VP (VBG moving) (ADVP (RB forward) (PP (IN with) (BASENP (PRPD their) (NN rocketry) (NN program))))))))))) (PERIOD .))