Michigan orders closure of pipeline in escalating dispute with Canada

While the governor says the line is a ticking timebomb', the company says Line 5 has never experienced a leak

The state of Michigan has told a Canadian energy company it must shut down a controversial oil and gas pipeline by Wednesday amid growing fears that a spill would be catastrophic to the region, in a feud which threatens to strain relations between Canada and the United States.

The company's refusal to comply with the order, and swift support from top Canadian officials, highlights the politicized nature of pipelines, which campaigners have used as a target in the fight against climate change.