Original sentence: A member of the Catholic Vietnamese minority, Diem pursued pro-Catholic policies that antagonized Buddhist groups to the extent that Buddhist activists staged mass protests (and even self-immolations) and  which triggered several coups attempts, the final one resulting in Diem's own execution.Viewed as a dictator by his opponents domestically and abroad, who blame Diem for a nepotistic and hardline desire to maintain power which led his country into a dangerous relationship with the United States, and to a ruinous civil war, Diem nonetheless has his proponents who credit him with resisting a duplicitous enemy pursuing a relentless insurgency campaign actively supported and encouraged by the Soviet Union with the complicity of Communist China, while taking the steps necessary (although often deeply unpopular domestically or repugnant to international sensibilities) to maintain domestic order during wartime
Edited sentence: As a member of the Catholic Vietnamese minority, Diem actively pressed biased pro-Catholic policies; to the detriment of the majority Buddhist population.In history, he is largely viewed as a dictator, whose nepotistic and hardline desire to maintain power led his country into a dangerous relationship with the United States, and to a ruinous civil war