"There are three noteworthy elements to New Democratic Party leader Tom Mulcair’s critique of the oilsands. The first is that he’s right — more or less. The second is that the Western premiers know he’s right.
"The third is that, for the NDP, criticizing the Alberta tar sands is good politics."
Full article: Canada News: Walkom: Mulcair’s politically deft oilsands critique is right (sort of).