A crisis in Yemen is rapidly escalating. A standoff centered on the presidential palace is taking place between security forces in the capital city of Sanaa while embattled President Ali Abdullah Saleh continues to resist stepping down, claiming that the "majority of Yemeni people" support him. While a Western-led military intervention in Libya is dominating the headlines, the crisis in Yemen and its implications for Persian Gulf stability is of greater strategic consequence. Saudi Arabia is already facing the threat of an Iranian destabilization campaign in eastern Arabia and has deployed forces to Bahrain in an effort to prevent Shiite unrest from spreading. With a second front now threatening the Saudi underbelly, the situation in Yemen is becoming one that the Saudis can no longer leave on the backburner.

The turning point in Yemen occurred March 18 after Friday prayers, when tens of thousands of protesters in the streets calling for Saleh's ouster came under a heavy crackdown that reportedly left some 46 people dead and hundreds wounded. It is unclear whether the shootings were ordered by Saleh himself, orchestrated by a member of the Yemeni defense establishment to facilitate Saleh's political exit or simply provoked by tensions in the streets, but it does not really matter. Scores of defections from the ruling party, the prominent Hashid tribe in the north and military old guard followed the March 18 events, both putting Saleh at risk of being removed in a coup and putting the already deeply fractious country at risk of a civil war.