(S (S (BASENP (JJ Sectarian) (NN violence)) (VP (VBZ has) (VP (VP (VP (VBN flared) (PP (IN in) (BASENP (NNP Iraq)))) (PP (IN since) (BASENP (DT the) (JJ US-led) (NN invasion)))) (COMMA ,) (S (VP (VBG leading) (S (BASENP (DT some)) (VP (TO to) (VP (VB speculate) (SBAR (IN that) (S (BASENP (NNP Iraq)) (VP (VP (VBZ is) (ADVP (RB now))) (PP (IN in) (NP (BASENP (DT the) (NNS throwes)) (PP (IN of) (BASENP (DT a) (JJ civil) (NN war)))))))))))))))) (PERIOD .))