1/2. Atthe"backdoor"ofAmerica,Alaskaand
Russia face each other across the narrow waters of the Bering Strait. For centuries people crossed from one continent to the other, until the Cold War.
Richard Creasey looks at the history of relationships across the boundary - from the 19th century, when
Russia expanded eastward into Alaska, until 1948, when the Ice Curtain closed. Producer Mark Rickards