The dilemma for Prime Minister Justin Trudeau on climate change and energy policy comes down to this.

If he wants to meet the promises he’s made about reducing Canada’s industrial greenhouse gas emissions, he has to gut our oil and gas sector.

He also has to do it quickly and the consequences for Alberta’s economy, as well as Saskatchewan’s and Canada’s, will be severe.

Trudeau and his cabinet would have to reject the $20.6 billion Teck Frontier oilsands megaproject in Alberta, now up for approval after getting the go-ahead from federal regulators.