Before the $5.5-billion Northern Gateway pipeline contract is even inked, not to mention approved by a federal panel, a heated quarrel has erupted between Alberta and British Columbia about divvying up the revenues.
It's not the first time in Canada that resources have spurred disputes between neighbouring provinces. And it likely won't be the last.
Here's a look at just a few examples of provincial spats, including the Alberta-B.C. one, over issues ranging from human to energy resources.