Complex sentence: Duẩn and Lê Đức Thọ, former rivals, formed a coalition within the Party leadership; together they initiated a purge against the pro-Chinese faction, the first two victims being Hoàng Văn Hoan Chu Văn Tấn.
Split into simpler sentences: Duẩn and Lê Đức Thọ, former rivals, formed a coalition within the Party leadership; together, they initiated a purge against the pro-Chinese factions. A purge began against the pro-Chinese faction, the first two victims being Hoàng Văn Hoan Chu Văn Tấn.