Betrayal is the breaking or violation of a presumptive contract, trust, or confidence that produces moral and psychological conflict within a relationship amongst individuals, between organizations or between individuals and organizations. Often betrayal is the act of supporting a rival group, or it is a complete break from previously decided upon or presumed norms by one party from the others. Someone who betrays others is commonly called a traitor or betrayer. Betrayal is also a commonly used literary element, also used in other fiction like films and TV series, and is often associated with or used as a plot twist.
It may be that the speed of change in the former Soviet Union was such that it was almost impossible to ward off a reactionary coup. By the end of the eighties, reformist change in the former Soviet Union was becoming a transformation. Gorbachev had facilitated and protected that process to a degree underestimated by Soviet radicals who had ceased to be his supporters. Some of those who should have been his friends had, unfortunately, forgotten. His chances would have been greater if radical democrats had realized how much danger Gorbachev was in, and had offered him more support as well as constructive -- not destructive -- criticism. These guilty men have deposed the most enlightened leader their country ever had.