Saudis strike rebels in Yemen
The Saudis - owners of a sophisticated air force they rarely use - have been increasingly worried that extremism and instability in Yemen could spill over to their country, the world's largest oil exporter. The offensive came two days after the killing of a Saudi soldier, blamed on the rebels.
Yemen denied any military action by Saudi Arabia inside its borders. But Yemen's president is a key ally of the Saudis, making it highly unlikely the kingdom would have launched the offensive without tacit Yemeni agreement.
A U.S. government official said the Yemenis were not involved militarily in the fighting. The official spoke anonymously because he was not authorized to discuss the matter publicly.
The offensive immediately raised concerns of another proxy war in the Middle East between Iran and Saudi Arabia, a key U.S. ally. Shiite Iran is believed to favor the rebels in Yemen while Saudi Arabia, which is Sunni, is Iran's fiercest regional rival.



