Complex sentence: In 1972, he was leader of the left-wing faction in the Politburo, and was engaged in a struggle with Ismaël Touré to be recognized as the next in line to succeed the president, Sékou Touré.
Split into simpler sentences: In 1972, he was leader of the left-wing faction in the Politburo. He was engaged in a struggle with Ismaël Touré to be recognized as the next in line to succeed the president, Sékou Touré.