Short answers, pulled from the story.
Historians mark February 1946 as the beginning of the Cold War era in Canada following Igor Gouzenko's defection from the Soviet Union. This event revealed a spy ring operating within Ottawa and triggered another red scare that intensified domestic anti-communist sentiment.
Prime Minister Louis St. Laurent served as a chief architect when Canada became a founding member of NATO in 1949. The nation maintained military bases in Germany including CFB Baden-Soellingen and CFB Lahr in the Black Forest region during this period.
Diplomat Lester B. Pearson re-introduced the concept of a UN military force during the Suez Crisis of 1956. His Emergency Force separated combatants and enforced a ceasefire between Britain, France, Israel, and Egypt as the first peacekeeping force ever deployed globally.
Pierre Trudeau removed nuclear weapons from Canadian soil and formally recognized the People's Republic of China after taking office. He established personal friendships with Cuban leader Fidel Castro while decreasing troops at NATO bases in Europe to diversify trade through the Third Option policy.
In spring 1996, Theseus was transported to CFS Alert on Ellesmere Island where it laid 180 kilometers of fiber optic cable on the seafloor in ice-covered waters. This autonomous underwater vehicle project monitored submarine traffic as part of Project Spinnaker.