TransCanada’s Energy East Pipeline is officially dead.

Announced via press release on Thursday, the news confirmed long-held suspicions that the $15.7 billion, 4,500 km Oilsands Pipeline simply wouldn’t cut it in today’s economic context.

But that hasn’t stopped commentators on all sides from pouncing on the cancellation as proof of their political project. Conservative politicians have lambasted the federal Liberals for introducing carbon pricing and new rules on pipeline applications, while environmentalists have claimed the company’s decision was a direct result of their organizing.

DeSmog Canada is here to help wade through the mess. Here are five things you should know about the cancelled Alberta-to-New Brunswick pipeline.