Complex sentence: Between 1963 and 1970, after al-Rikabi's resignation, members who where Shia in the Regional Command had dropped to 14 percent, however, out of the three inner-factions of the Ba'ath Party, two out of three factional leaders were Shia.
Split into simpler sentences: Between 1963 and 1970, after al-Rikabi's resignation, Shia representation in the Regional Command had dropped to 14 percent. Hhowever, in the three inner-factions of the Ba'ath Party, two out of three factional leaders were Shia.