The Globe and Mail reports in its Friday edition that a coalition of first nations leaders is ratcheting up pressure on Canada's oil sands industry. The Globe's Shawn McCarthy and Kelly Cryderman write that at press conferences in Montreal and Vancouver on Thursday, representatives of 50 indigenous communities in Canada unveiled a "treaty" that commits them to band together to stop all new pipelines, rail projects and increased tanker traffic that would facilitate oil sands expansion. "Our Nations hereby join together under the present treaty to officially prohibit and to agree to collectively challenge and resist the use of our respective territories and coasts in connection with the expansion of the production of the Alberta Tar Sands, including for the transport of such expanded production, whether by pipeline, rail or tanker," the agreement says. Oil companies and the governments of Alberta and Saskatchewan argue that the industry needs additional pipeline capacity to reach the coasts in order to access growing markets and gain world prices for Canadian crude. Many of the signatories to the agreement have been voicing their opposition to specific projects, including TransCanada's Energy East line.