The group, including former U.S. Ambassador Gary Locke, ex-Hong Kong Governor Christopher Patten and five former Canadian ambassadors to China, released an open letter to the Chinese leader Tuesday urging the two men’s freedom. The letter said that Michael Kovrig, a Canadian diplomat on leave to work with the International Crisis Group in Hong Kong, and Michael Spavor, an entrepreneur who helped organize tourist trips to North Korea, had advocated exchanges that help build ties around the globe.
