Iran

Iran is ruled by an ayatollah, who is the supreme leader of the country.

Not particularly. The government of Iran has a strong Anti-Sunni bent which puts many Sunni-majority Arab States like Saudi Arabia in its cross-hairs. However, this is a political/religious issue, not an ethnic issue. Iranian people are actually very open-minded and tolerant, especially when compared to their government.

Their infantry usually had wicker shields, quilted vests and a variety of helmets. This left them at a serious disadvantage to Greek infantry with metal body armour and the Macedonian phalanx which was essentially a spear and shield wall.

They tried to even this by drafting Greeks located within their empire during the Persian War 499-450 BCE, but didn't have the numbers to match the Greek city coalitions; then against Macedonia they hired Greek armoured mercenaries, but Alexander slaughtered the prisoners after the first battle in 334 BCE as a warning to Greeks not to go into Persian service. A final effort at Gaugamela in 331 BCE to use new specially-trained armoured soldiers opaquely called Cardakes also failed to deliver experienced armoured soldiers capable of standing up to the seasoned Macedonians.

no

the CIA

Iraq is the only country that shares these borders.

I'm not entirely sure what you are driving at. Neither the Iraqi nor the Iranian population was chomping at the bit to go to war. (Admittedly once war broke out each side had its patriots and rebels, but wars tend stifle or exacerbate domestic conflicts, so this is to be expected.)

There are no World Association of Girl Guide and Girl Scout (WAGGGS) member organizations in Iran.