In his speech at the Republican National Convention on Wednesday, activist Chen Guangcheng said that the U.S. must use its values to gather a coalition of democracies "to stop CCP's aggression." In 2012, the blind activist's campaign for justice in China threatened to upend relations between the world’s two superpowers Subscribe: http://smarturl.it/reuterssubscribe Reuters brings you the latest business, finance and breaking news video from around the globe. Our reputation for accuracy and impartiality is unparalleled. Get the latest news on: http://reuters.com/ Follow Reuters on Facebook: https://www.facebook.com/Reuters Follow Reuters on Twitter: https://twitter.com/Reuters Follow Reuters on Instagram: https://www.instagram.com/reuters/?hl=en