Britain's Prince Charles, the Prince of Wales, greets Vietnamese General Secretary of the Communist Party Nguyen Phu Trong, left, at Clarence House in central London, Wednesday, Jan. 23, 2013. (AP Photo/Carl Court, Pool)

Photo by: Carl Court

Britain's Prince Charles, the Prince of Wales, greets Vietnamese General Secretary of the Communist Party Nguyen Phu Trong, left, at Clarence House in central London, Wednesday, Jan. 23, 2013. (AP Photo/Carl Court, Pool)