"The security threat level in Yemen is extremely high due to terrorist activities and civil unrest," the State Department said in its advisory. "There is ongoing civil unrest throughout the country and large-scale protests in major cities," while adding that clashes in the capital, Sanaa "may escalate without notice."
From London on Wednesday, President Obama called on Saleh to "move immediately" to implement an agreement negotiated with other Middle Eastern countries for Saleh to give up power, which Saleh has refused to do three times after making verbal commitments to step down, according to the AP.
Want the news first every morning? Sign up for National Journal’s Need-to-Know Memo. Short items to prepare you for the day.