Source:
CNNThe American, British and European Union ambassadors to Yemen are trapped in an embassy surrounded by gunmen angry about efforts by Arab mediators to ease President Ali Abdullah Saleh out of power, a source familiar with the situation told CNN Sunday.
Two senior State Department officials confirmed that pro-Saleh demonstrators were preventing U.S. Ambassador Gerald Feierstein from leaving the United Arab Emirates embassy.
...
Saleh was originally expected to sign a deal Sunday brokered by Gulf Cooperation Council Secretary-General Abdul Latif Zayani, who is also at the UAE embassy.
But the Yemeni president raised a new obstacle earlier Sunday, refusing to recognize the opposition signature on it from the day before.
Read more:
http://edition.cnn.com/2011/WORLD/meast/05/22/yemen.political.deal/?hpt=T1