US-Iran relations: A guide to 60 years of tricky relations

US-Iran relations have been in the spotlight once again as the Iraq crisis has unfolded this week.

From the CIA-orchestrated overthrow of Iran's prime minister in 1953 to a phone call between Presidents Obama and Rouhani and possible direct talks on Iraq's security,

BBC News looks at more than 60 years of tricky relations between Iran and the US.