Modern Iran is where Persia originated, but during its peek expansion Persian Empire included most of the Middle East and Asia Minor.
nothing
Persia covered a lot more land that is now known as Iran.
Iran
Iran
Farsi is the modern language of Iran, formerly known as Persia. The Persian translation of the world love is eshgh or eshq.
Persia became known as modern day Iran.
Iran
The southern country formerly known as Persia is Iran. The name "Persia" was used in the Western world until 1935, when the Iranian government requested that the international community use the name "Iran" to reflect the country's native language and identity. The name "Iran" means "Land of the Aryans" and has been used historically to refer to the region.
Iraq
No Persia is todays Iran, but Thailand was formerly Siam.
The capital city of Iran (formerly known as Persia) is Tehran.
The question as written makes no sense. Iraq and Iran (formerly called Persia each other with no country in between them. (Consult the above map.) However, if you meant to ask which country is between Afghanistan and Iraq, it would be Iran (formerly called Persia).As for the modern country that used to be called Persia, this would be Iran.