The Obama Administration has again called for Syrian President Bashar al-Assad to step down, despite an Arab League announcement that Syria agreed to a plan Wednesday to stop a violent crackdown on Syrian protesters.

White House spokesman Jay Carney told reporters Mr. Assad has lost his legitimacy to rule. But he added the U.S. supports all international efforts aimed at convincing the Syrian government to stop attacking its own citizens.

U.N. Secretary-General Ban Ki-moon said in Libya that he supported the Arab League agreement. He urged Syria to comply with the plan as soon as possible.

The United Nations says the number of people killed in the seven-month-old uprising has surpassed 3,000. The Syrian government says terrorists have killed hundreds of security personnel during that period.