Home / Opinion / Chen WeihuaWorld owes Snowden debt of gratitudeUpdated: 2013-06-14 07:56By Chen Weihua ( China Daily)Comments Print Mail Large Medium  SmallWorld owes Snowden debt of gratitudeThere have been raging debates about whether Edward Snowden is a whistleblower, hero, criminal or traitor after the former CIA employee revealed the US National Security Agency's top-secret surveillance