(S (S (NP (BASENP (DT The) (NNS leaders)) (PP (IN at) (BASENP (DT the) (NN summit)))) (VP (ADVP (RB later)) (VP (VBD approved) (NP (BASENP (DT a) (NN declaration)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (BASENP (NNP Uribe)) (VP (VP (VBD apologized) (PP (IN for) (BASENP (DT the) (JJ military) (NN operation)))) (CC and) (VP (VBD vowed) (S (VP (ADVP (RB never) (RB again)) (VP (TO to) (VP (VB violate) (NP (BASENP (DT another) (NN nation) (POS 's)) (NN sovereignty)))))))))))))) (PERIOD .))