Though Bin Ladin's destination was Afghanistan, Pakistan was the nation that held the key to his ability to use Afghanistan as a base from which to revive his ambitious enterprise for war against the United States.
( ( Though ( ( ( Bin ( Ladin 's ) ) destination ) ( was Afghanistan ) ) ) ( , ( Pakistan ( ( was ( ( the nation ) ( that ( ( held ( the key ) ) ( to ( his ( ability ( to ( ( use ( Afghanistan ( as ( a base ) ) ) ) ( from ( which ( to ( ( revive ( his ( ambitious enterprise ) ) ) ( for ( war ( against ( the ( United States ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Though) (S (NP (NP (NNP Bin) (NNP Ladin) (POS 's)) (NN destination)) (VP (VBD was) (NP (NNP Afghanistan))))) (, ,) (NP (NNP Pakistan)) (VP (VBD was) (NP (NP (DT the) (NN nation)) (SBAR (WHNP (WDT that)) (S (VP (VBD held) (NP (DT the) (NN key)) (PP (TO to) (NP (PRP$ his) (NN ability) (S (VP (TO to) (VP (VB use) (NP (NP (NNP Afghanistan)) (PP (IN as) (NP (DT a) (NN base)))) (PP (IN from) (SBAR (WHNP (WDT which)) (S (VP (TO to) (VP (VB revive) (NP (PRP$ his) (JJ ambitious) (NN enterprise)) (PP (IN for) (NP (NP (NN war)) (PP (IN against) (NP (DT the) (NNP United) (NNPS States)))))))))))))))))))) (. .)))
Pakistan's geography made it necessary to gain Pakistani support before he could carry out his operations.
( ( ( Pakistan 's ) geography ) ( ( made ( it ( necessary ( to ( ( gain ( Pakistani support ) ) ( before ( he ( could ( ( carry out ) ( his operations ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNP Pakistan) (POS 's)) (NN geography)) (VP (VBD made) (S (NP (PRP it)) (ADJP (JJ necessary) (S (VP (TO to) (VP (VB gain) (NP (JJ Pakistani) (NN support)) (SBAR (IN before) (S (NP (PRP he)) (VP (MD could) (VP (VB carry) (PRT (RP out)) (NP (PRP$ his) (NNS operations)))))))))))) (. .)))