LONDON–All the dons sitting around the tea table with China’s most famous dissident, Wei Jingsheng, seemed decidedly nervous and unusually quiet by the everyday standards of Britain’s most revered university. It took me a few minutes to figure out why and then I guessed if your brain is telling you that this may be the Nelson Mandela of China, future ruler of one third of the world, then a little awe and a roomful of silence are to be expected.After the tea there was the speech to students. Direct, eloquent, his 18 years in jail on a wind-swept, bitterly cold, 10,000 feet high plateau, behind him, he tore into the Chinese communist regime and to the western governments who give it so much comfort and assistance. With almost serene self-confidence he appeared to predict that his cause will triumph sooner rather than later–“every ordinary Chinese now recognises the need for...