Sherritt’s refinery in Alberta goes idle as sanctions disrupt Cuban nickel supply and force cost-cutting measures.

The Toronto-based company halted production at its nickel and cobalt mine in eastern Cuba in February because of a dire energy crisis on the island.

The Trump administration distressed one of Canada’s oldest mining firms, which operates a joint venture in Cuba, through blatant lawfare, apparently so a Trump-aligned oligarch could snatch up a ...