The Iraqi authorities said that two facilities had been damaged and that four other sites had been targeted. There was no immediate claim of responsibility.

The attack on a Greek Orthodox service made clear the challenges facing Syria’s new government in a country long pitted by sectarian divides.

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Demonstrators took to the streets of Iran, Iraq and Lebanon on Friday after midday prayers, expressing anger at Israel’s widening offensive.

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The cleric has ruled for more than three decades, spearheading a policy of backing proxy groups to wield influence across the Middle East.

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Hezbollah, Iran’s most powerful regional ally, has signaled privately that it does not intend to attack Israel, but Lebanon’s military has bolstered its presence in the country’s south to prevent rocket fire.

© Hassan Ammar/Associated Press