Goldhawk Live You’ve heard about how twenty world leaders will gather in Ontario in a week's time. You've heard about security and how much it will cost. Now, it's time to get down to what those leaders will tackle.  What do you think is the most pressing issue that the G20 needs to work on? Is it debt management, reform of the industrialized world's banking and financial regulations, or is it something else? What's the most urgent issue the G20 leaders should work on? Guests: Brian Lee Crowley, Macdonal-Laurier Institute, and author of the newly-released book "The Canadian Century: Moving Out of America's Shadow"; Patrick Leblond, Assistant Professor at the University of Ottawa's Graduate School of Public and International Affairs; John Kirton, head of the G20 Research Unit at the University of Toronto.