Talks between trade representatives and high-level officials from some 166 countries ended with no major deals signed early Monday. The World Trade Organization (WTO) had been meeting in the Cameroonian capital of Yaounde for four tense days of negotiations, hoping to finalize an agreement on e-commerce that was blocked by Brazil at the last minute. "We worked hard," WTO Director-General Ngozi Okonjo-Iweala said, adding that the US and Brazil in particular "need more time" to work out their