CNNW World Business Today May 23, 2011
hit. the president of yemen's refused to sign a deal with opposition leaders to step down. the agreement had been brokered by make states. the ministers failed to convince fail the president. barack obama arrives in ireland today at the start of his visit to europe. as part of his trip he's going to visit the home of his great great great grandfather. i'm zain vergee in london. "world business today" starts now. good afternoon from cnn hong kong, i'm andrew stevens. and a very good morning to you from cnn london, i'm nina dos santos and this is "world business today." from sink...