Aiding its allies in Baghdad and protecting its borders are key reasons why Iran joined the war against ISIL.
![Iran-Satellite](/https/www.aljazeera.com/wp-content/uploads/2015/02/2ad1f1ce852e45e18f865ffe52b714c5_18.jpeg?resize=770%2C513&quality=80)
Aiding its allies in Baghdad and protecting its borders are key reasons why Iran joined the war against ISIL.
Both parties seek a nuclear agreement they can take back home.