German Chancellor Angela Merkel speaks during the Bulgaria-Germany economy forum in Sofia, capital of Bulgaria, Oct. 11, 2010. Merkel paid a one-day visit to Bulgaria on Monday. (Xinhua/Bulgaria News Agency)

Bulgarian Prime Minister Boyko Borisov (R) shakes hands with German Chancellor Angela Merkel during a joint press conference in Sofia, capital of Bulgaria, Oct. 11, 2010. Merkel paid a one-day visit to Bulgaria on Monday. (Xinhua/Bulgaria News Agency)

Bulgarian Prime Minister Boyko Borisov (R) holds a welcome ceremony for German Chancellor Angela Merkel in Sofia, capital of Bulgaria, Oct. 11, 2010. Merkel paid a one-day visit to Bulgaria on Monday.(Xinhua/Bulgaria News Agency)

Bulgarian President Parvanov (R) applauds after decorating German Chancellor Angela Merkel with the Bulgarian "Stara Planina" medal in Sofia, capital of Bulgaria, Oct. 11, 2010. Merkel paid a one-day visit to Bulgaria on Monday. (Xinhua/Bulgaria News Agency)