On why Canada should stay, Afghanistan is now effectively our own backyard. The last time we let the Taliban run Afghanistan they gave a home to al-Qaeda, a global terrorism movement that is dedicated to the destruction of the west. They planned and executed their attacks against the United States from there. We have seen attacks in Britain and Spain. If we allow the Taliban to return to southern Afghanistan and be a home to global terrorism, it will affect Canada's security--the security in this country, the security of Canadian citizens and their families--for generations to come.
On May 29th, 2007. See this statement in context.