In 2000, with controversy raging over the presence in Sudan of Canada's largest independent oil and gas producer, Ottawa decided to open a watching post in Khartoum. Nicholas Coghlan was recalled from his assignment in Columbia - another war zone - to set up and run the first diplomatic presence in the largest country in Africa. "In diplomatic circles, you cry when you hear you've been posted to Sudan," says Coghlan. "But you cry even more when you...