A general view shows the ordinary meeting of 134th session of the Gulf Cooperation Council (GCC), on March 12, 2015 in Riyadh.

The Gulf Cooperation Council (GCC) of Gulf Arab states announced on Tuesday it will hold an extraordinary meeting in Riyadh on Saturday to discuss tensions with Iran after attacks on Saudi missions there.

Saudi-Iranian tensions threaten to derail efforts to end Syria’s five-year-old civil war in which Saudi Arabia and its Gulf Arab allies back rebel groups against Iranian-backed Syrian President Bashar al-Assad.

They also cast doubts over chances for a peaceful solution in Yemen, where a Saudi-led military coalition has been bombing the Iran-allied Houthi movement for nine months.

“Foreign ministers of the GCC States will hold an extraordinary meeting in Riyadh on Saturday … to discuss the repercussions of the attack on the Embassy of Saudi Arabia in Tehran and the Saudi consulate in the Iranian city of Mashhad,” GCC Secretary-General Abdullatif bin Rashid Al Zayani said in an emailed statement.

Sunni-ruled Saudi Arabia on Saturday executed a prominent Shi’ite cleric on terrorism charges. This led to attacks by Iranian protesters on Riyadh’s embassy in Tehran and consulate in Mashhad.

The kingdom responded by severing ties with Iran. Close allies Bahrain and Sudan followed suit, while the United Arab Emirates downgraded relations and Kuwait recalled its ambassador to Tehran in a diplomatic crisis that could deepen sectarian tension in the war-torn Arab world.

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