Canadian energy companies and officials share intelligence, scour social media and send up surveillance drones but even so they say preventing a disruption to the country’s vast pipeline network is near impossible and each side wants the other to do more. This week, five oil pipelines carrying Canadian crude were halted in the United States in an audacious act by protesters opposed to oil sands development and a proposed new pipeline in North Dakota. The coordinated attacks in isolated locations near the Canadian border sparked a flurry of exchanges among pipeline operators, police, Canada’s national energy regulator and a U.S. counterpart to assess the impact. While they quickly consulted about the risk of the attacks spreading, the disruption focused […]