Ad campaigns launched for and against Keystone pipeline Add to ... CTV News Published Monday, Apr. 08, 2013 2:50AM EDT Last updated Thursday, May 02, 2013 11:12AM EDT More on the commercials produced by Keystone pipeline critics, and the pro-pipeline ads from the Alberta government. Watch More Video: Obama: 'we can't seal ourselves off from the rest of the world' "Dudeplomacy" on show between Trudeau, Obama Trump says Sanders secretly 'hates' Hillary Clinton Turkey vows to defend against more terror The Globe and Mail talks to the Canadian who is now the first lady of Iceland 'Three amigos' talk trade, spurn isolationism in Obama's final summit Obama, Nieto talk Turkey, immigration at Three Amigos Summit U.S. to admit 30,000 more refugees over two years 'We have to fight fire with fire': Trump calls for return to waterboarding Obama, Trudeau and Nieto arrive for Ottawa summit 'For heaven's sake man, go!' U.K.'s Cameron tells opposition leader See inside as bomb-damaged Istanbul airport reopens At least one dead in house explosion in Mississauga, Ont. Watch as helicopter crew member tackles Texas burglary suspect in chase See from above: Aftermath of Mississauga house explosion Islamic State suspected in deadly Istanbul airport attack EU gathers without British PM David Cameron to discuss U.K.'s exit Raw footage shows aftermath of deadly home explosion in Mississauga Reports of racist taunts surge in Britain Kerry condemns 'daily fare' of violence after Istanbul airport attack Comments AA More Related to this Story energy Video: Athabasca spill adds to Alberta oil's image problem Energy Video: Where do average Americans stand on the Keystone pipeline?