Although this DIA presentation on the “new” Great Game is too high level to be really insightful, and is guilty of being an OWerpoint (also see this example) in some places, there are some really handy slides detailing Iran’s claims to surrounding territories.

Slide 29: Iran: Territories Lost and Gained

Slide 30: Iran: Territorial Changes (1800 – 1900s)

Obviously the Persian empire had a massive expanse of territory, but these do a good job of showing Iran’s claims in the modern era.