China faced growing calls on Tuesday to immediately release Liu Xiaobo, the country's only Nobel Peace Prize winner imprisoned since 2009, following the revelation of his serious cancer diagnosis.His wife, Liu Xia, was seen in a video clip posted on Twitter speaking to a friend on a mobile phone about his dire medical condition."(He) could not have surgery, could not have radiotherapy, could not have chemotherapy," she said in tears in the clip, whose recording date could not be verified.The famed dissident's lawyer Mo Shaoping confirmed Monday that the 61-year-old, who has been jailed for …READ FULL ARTICLE