What are 5 major types of security forces in Iran?

First is the IRGC (Islamic Revolutionary Guard Corps), Iran’s most powerful military branch, which has its own ground forces, navy and aerospace force. Next is the 'Quds Force', which provides training and arms to Hezbollah, Hamas, and Houthis. Then, there is 'Basij', which focuses on internal security, and 'Artesh', which is Iran's traditional military. 'Faraja' is Iran's national police force.