There are a great number of political parties in Iran. Any party is allowed to operate as long as it does not oppose the religious leaders of the country. A few of the parties that currently exist are the Islamic Coalition Party, the Iranian Nation's Welfare Party, and the Freedom Party of Iran.

Political Parties.

Most theocracies throughout history did not have political parties (such as Ancient Egypt, Babylonia, Ancient Israel, the Safavid Empire, etc. Some theocracies, like the Islamic Republic of Iran certainly do have political parties. However, the theocrats themselves exist outside of the political process since the idea is that the theocrats have a singular religious perspective and are, therefore, not divided like the rest of the population.

This is a big lie. Iran is a victim of terrorism.

The plural of political party is "political parties".