The Agenda's week in review begins with a look at why Canada should put some resources and attention to defending the Arctic. Then, what's really behind the upheaval in British politics? Journalist David Frum discusses the U.S. midterm elections. Musician Tom Wilson talks "Beatiful Scars," a new documentary based on his life. And, what makes up personality and is it immutable?See omnystudio.com/listener for privacy information.