Aiding its allies in Baghdad and protecting its borders are key reasons why Iran joined the war against ISIL.
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Both parties seek a nuclear agreement they can take back home.
![Iran and the P5+1, will gather on December 10 for further negotiations [Reuters]](/wp-content/uploads/2014/12/20141124181631719734_20.jpeg?resize=270%2C180&quality=80)
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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.