Hezbollah, a Shia militant group in Lebanon allied to Syria's President Bashar al-Assad, has vowed to retaliate after accusing Israel of launching an air strike at one of its positions on Monday near the border with Syria. No casualties were reported.

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Israel has not acknowledged the attack, the first inside Lebanese territory since the start of the Syrian conflict three years ago. Hezbollah has been fighting alongside Syrian government troops near the border and has lost at least several hundred fighters during the conflict. 

Read more at The Washington Post.

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