Arab leaders -- minus Syrian President Bashar al-Assad -- meet in Saudi Arabia for a summit on Sunday as world powers face off over Syria and tensions rise between Riyadh and Tehran.
Saudi Arabia is pushing for a tough, unified stance against its regional arch-rival Iran at the annual gathering of the 22-member Arab League. The two regional titans, locked in proxy wars in Syria and in Saudi Arabia's southern neighbor Yemen, back opposing parties in Iraq and Lebanon.
The summit begins 24 hours after the United States, France and Britain launched controversial air strikes in war-torn Syria in response to a reported regime chemical attack on the decimated rebel enclave of Eastern Ghouta last week.
Saudi Arabia and Qatar, which both voiced support for the strikes, remain locked in a months-long diplomatic standoff, with Riyadh accusing Doha of supporting Islamist extremists and being too close to Iran.
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