 Complete the following phrase:  The visit was the high point of relations between Diệm and Washington, as in later years, the US government and members of the AFV became increasingly disillusioned with Diệms failure to liberalize his government and enact changes to make South Vietnam more democratic. The once-supportive media began to report on South Vietnam without overlooking problems in Diệms administration. In 1963, American support for Diệm collapsed during the Buddhist crisis as Washington concluded that Diệm was incapable of offering a solid alternative to the communists, and he was 