The document summarizes US relations with Iran under the Shah from the 1950s through the 1970s. It discusses how the US orchestrated a coup to overthrow Prime Minister Mossadeq in 1953 in order to protect Western oil interests in Iran. This led to a period where the US traded military aid and intelligence for Iranian oil. The Shah implemented social and economic reforms with US support, but these reforms alienated religious and political groups. Growing unrest led to the 1979 Iranian revolution and hostage crisis, severing US-Iranian relations.