U.S. CIA and Great Britain

1) What action was taken by the US CIA and Great Britain in Iran in 1953?  Why was this action taken? What did the US and Great Britain gain? What resulting action happened in Iran in 1979 and how did this impact the US? What are US-Iran relations as a result?

2)  Should hydraulic fracturing be allowed in the US? Why or why not? If so, under what regulations and conditions?”