ed ▁for ▁failing ▁to ▁act ▁in ▁the ▁N ă m ▁Cam ▁cor ruption ▁sc andal ▁when ▁he ▁head ed ▁the ▁city ▁government . ▁Sang ▁was ▁promoted ▁to ▁fifth ▁position ▁in ▁the ▁party ▁at ▁a ▁con gress ▁in ▁April ▁ 2 0 0 6 . ▁At ▁this ▁con gress , ▁he ▁was ▁also ▁appointed ▁executive ▁secretary ▁of ▁the ▁party ' s ▁secret ariat , ▁a ▁position ▁which ▁super vis es ▁the ▁membership ▁and ▁the ▁internal ▁structure ▁of ▁the ▁party . ▁ ▁Cl imb ▁to ▁leadership ▁ ▁Tr ư ơ ng ▁T ấ n ▁Sang ▁was ▁promoted ▁to ▁the ▁party ' s ▁number ▁two ▁slot ▁between ▁con gress es ▁in ▁October ▁ 2 0 0 9 . ▁His ▁authority ▁soon ▁e cli ps ed ▁that ▁of ▁General ▁Secretary ▁N ô ng ▁ Đ ứ c ▁M ạ n h , ▁the ▁only ▁person ▁nomin ally ▁above ▁Sang ▁in ▁the ▁party ▁hierarchy , ▁according ▁to ▁a ▁le aked ▁diplom atic ▁cable ▁by ▁U . S . ▁Amb assador ▁Michael ▁Mich al ak . ▁ ▁Sang ▁" ass umed ▁many ▁of ▁Manh ' s ▁normal ▁respons ib ilities ," ▁Mich al ak ▁wrote . ▁At ▁diplom atic ▁meet ings , ▁Sang ▁could ▁" comment ▁author it atively , ▁in ▁detail ▁and ▁without ▁notes ," ▁whereas ▁M ạ n h ▁" app eared ▁dis eng aged " ▁while ▁he ▁read ▁a ▁ 3 0 - min ute ▁prepared ▁statement ▁" ver bat im ▁and ▁in ▁a ▁monot one ." ▁A ▁BBC ▁story ▁described ▁rival ry ▁between ▁Sang ▁and