Saudi Arabia attacks rebels in Yemen
Saudi Arabia has launched a military operation in Yemen against Houthi Shia rebels, the Saudi ambassador in the US has said.
Adel al-Jubeir said Saudi Arabia acted to "defend the legitimate government" of President Abdrabbuh Mansour Hadi.
The Iran-backed rebels have made rapid gains in recent months, forcing Mr Hadi to flee the capital Sanaa.
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