Yemen government agrees unprecedented negotiations as observers suggest transition underway; Tribesmen seize parts of Yemen's second city; Britain and France demand UN sanctions against Syria; Food crisis in east Africa demands urgent action; 97% of Afghanistan's GDP linked to foreign military and donors; China builds first aircraft carrier; and more
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World News Brief, Wednesday April 27
Syria crackdown prompts West to consider sanctions and UN response (+ analysis); Yemen Opposition split over plans to remove Saleh; UN finds war crimes on both sides in Sri Lanakan war, 40,000 dead; Chernobyl remembered 25 years on; and more
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