OTTAWA—Alberta’s new premier sent a brazen message to Prime Minister Justin Trudeau on Thursday, when he raised the spectre of a national unity crisis and warned the Liberal government that its environmental policies will landlock Canada’s oil reserves and fan the flames of separatist angst in his province.

A hush hush report revealed Kenney was continuing to hold secret seances with Quebec separatist icons René Lévesque and Jacque Parizeau in undisclosed locations rumoured to be the Petroleum Club or the Ranchmans Club in Calgary.