I'm from Iran!
Is Iran a terrorist?
Quick Answer: No it's not! Iran just is supporting some countries/groups (mentioned in the accepted answer) which the USA doesn't like them.
As the accepted answer mentioned we support:
- Palestinian Islamic Jihad
But we believe they're not terrorists. The common thing about these 3 groups is that they all are against Zionists. Zionists invaded Palestine because they want to make a new [larger] country for themselves. We don't accept that. They have been bombing neighbor countries for many years. Unfortunately, they can't stand any powerful country in the region, they have many Jewish and powerful friends in the white house, we believe the USA attacked Iraq and other Asian countries because of Israel.
So now that we know these facts, we know Israel and the USA don't like Iran, it's not surprising to hear the USA calls Iran as the terrorist nation.
Does Iran sponsor terrorists?
At first, we need to answer a question; who is the terrorist? The answer is the one who stands against zionists! Who isn't a terrorist? The one who helps the USA and zionists! Do you know Mojahedin Khalgh? They were known as a terrorist group by the USA before, but a few months ago they announced they're not! Because they found out Mojahedin Khalgh is the enemy of Iran, and they have attacked this country before!
As I explained above, we are the sponsor of some groups like Hezbollah, Hamas, and countries like Yaman, Syria, Iraq.
Our president Ahmadinejad announced many times we want people in Palestine to have a free election. He also said if other countries don't make trouble in Asia all of these countries will be developed and there won't be any terrorists to be sponsored! (ISIS was created because of the USA! If they didn't attack to Iraq I'm sure there wouldn't be any terrorist groups)
To reply to the accepted answer!
Let me tell you something about ISIS. We like Muslims (At least I do or other Muslims in Iran), but we hate ISIS even if ISIS was against Israel and the USA. Why? because we believe they were pretending to be Muslim and they were showing a bad aspect of Islam. Besides, they were destroying our religious structures in Iraq. The name of our fighters was/is The Sanctum Defenders!
History and proofs for the above claims.
How Muhammad was reacting to his enemies:
Prophet Muhammad was releasing almost all of his captives. It's said 6000 captives from Havazen war were helping prophet! and again it's said: Captives from Havazen war told prophet Muhammad to release them, Prophet said after pray repeat your request, I'll convince my people to release all of your captives.
Prophet say to whoever is in your hands of the captives "If Allah knows [any] good in your hearts He (and we) will give you [something] better than what was taken from you and He will forgive you, and Allah is Forgiving and Merciful"
So, as you have seen; ISIS never did such these things! They just were cutting heads off and killing people! That's not how we act with our enemies. We will never defend those monsters.
And what is [the matter] with you that you fight not in the cause of Allah and [for] the oppressed among men, women, and children who say, "Our Lord, take us out of this city of oppressive people and appoint for us from Yourself a protector and appoint for us from Yourself a helper?"
Based on these quotes we defend oppressed people. Other countries like the USA may say they are terrorists; as you know Israel is hurting people in Palestine, they're bombing them!