The story of NATO shown on "THE BIG PICTURE" television series -- In this issue of THE BIG PICTURE TV series, the cameras are focused on NATO -- The North Atlantic Treaty Organization. Guest narrator for this filmed documentary is the distinguished commentator and news analyst, Mr. Edward R. Murrow. As shown in this episode, the United States as a founding member of this vital international body, has demonstrated to the world the importance we place on the closest association between the members of the Atlantic community. Throughout history, nations have sought through treaties and alliances with other nations, to maintain their security and remain free from attack. But not until the twentieth century did the concept of national security become worldwide in its scope. World Wars I and II and the Korean War proved beyond any doubt that when one free nation anywhere is threatened by aggression, the safety of all free nations is ultimately at stake. Dramatically presented on film, the United States is shown in its strategic role as leader in the free world and its alliance with other nations dedicated to the preservation of peace and the welfare of mankind.