Original sentence: As well as the rightists, the liberal modernising elements within the Sangkum, headed by In Tam, had become increasingly alienated by Sihanouk's autocratic style.Lon Nol's appointee as deputy Prime Minister, Prince Sisowath Sirik Matak - an anti-Vietnamese nationalist and leader of the Cambodian business community - is thought to have suggested that Sihanouk should be assassinated, though Lon Nol rejected this plan as "criminal insanity"
Edited sentence: As well as the rightist nationalists, the liberal modernising elements within the Sangkum, headed by In Tam, had also become increasingly alienated by Sihanouk's autocratic style.Lon Nol's appointee as deputy Prime Minister, Prince Sisowath Sirik Matak - a US-friendly nationalist and leader of the Cambodian business community - is thought to have suggested that Sihanouk should be assassinated, though Lon Nol rejected this plan as "criminal insanity"