(S (S (BASENP (NNS Officials)) (VP (VBP say) (SBAR (IN that) (S (BASENP (NNP Israel)) (VP (MD will) (VP (VP (VP (VB warn) (BASENP (NN ship) (NNS operators))) (SBAR (IN that) (S (S (S (BASENP (PRPD their) (NN crew)) (VP (MD may) (VP (VB be) (VP (VBN detained))))) (CC and) (S (BASENP (DT the) (NN vessel)) (VP (VBN held)))) (SBAR (IN until) (S (BASENP (NN impound) (NNS fees)) (VP (VBP are) (VP (VBN paid)))))))) (COMMA ,) (S (VP (VBG claiming) (NP (BASENP (DT the) (NN backing)) (PP (IN of) (BASENP (JJ international) (JJ maritime) (NNS treaties)))))))))))) (PERIOD .))