Iran, hvorfor?

Hvorfor er Iran så aggresive mot USA, Israel og sine naboer som Saudi Arabia?

For mer info:

• Crash Course World History: Islam, the Quran,
  and the Five Pillars All Without a Flamewar 
• Crash Course World History: Conflict in Israel and Palestine 
• Crash Course World History Iran’s Revolutions 
• Crash Course World History: Islam and Politics