Complete the crossword, then click on "Check" to verify your answer. Click on a number in the grid to get a free letter and/or see the clue.

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Across: 3. The second article of the North Atlantic Treaty's is said to be that (adjective). 8. Canadian Prime minister between 1957 and 1963. 10. Adjective proper to the war (popular) between Capitalist and Communist blocks. 11. This radar network was built in the early 1950s across southern Canada (near the 49th Parallel). Composed of 34 sites from Vancouver Island to Newfoundland, this Line was the Canadian extension of a US system called the Permanent Radar Network. 12. Capital of U.S.S.R. 15. Revolutionary jet interceptor, designed and built by theA.V. Roe Aircraft company of Canada. It was a plane of firsts, fly by wire, computer control, integral missile system and capable of MACH 2+. The year was 1958. 16. Canadian destroyer, which participated to the Korean War. Named after a Canadian lake.

Down: 1. General name for two sets of trials of Nazis involved in World War II and the Holocaust. The trials were held in the German city of the same name from 1945 to 1949 at the Palace of Justice (the only court in Germany large enough to host the event that had not been destroyed by Allied bombing). 2. North Korean capital. 3. In Fulton, Missouri, on March 5, 1946, he declared that "From Stettin in the Baltic to Trieste in the Adriatic an iron curtain has descended across the Continent". 4. This radar line was situated at about 70 degrees north latitude, roughly along the northernmost mainland and in the southern Arctic Archipelago. This line was far enough away from industrial and populated areas that it would provide a warning time of about four to five hours. 5. He his associated to a political campaign against intellectuals in the Soviet Union. 6. Name given to this United States program of economic aid for the reconstruction of Europe (1948-1952). 7. Soviet file clerk who defected to Canada in 1945, bringing with him much evidence as to Soviet espionage activities in the west. He was born in the Soviet Union. Joining the military at the start of the Second World War he was trained as a cipher clerk and posted to the Soviet embassy in Ottawa. During his time sending coding messages he learned much of Soviet espionage activities in Canada. 9. War that began on June 25, 1950 and Canada took an active part in it. 13. South Korean capital. 14. An international organization created in 1949 by the North Atlantic Treaty for purposes of collective security (acronym).