Canada's prime minister has stressed his country's claims to the Arctic region on a trip there, days after Russia laid claim to the North Pole.Correspondents say Stephen Harper's tour has taken on new urgency since Russian sailors dropped a flag on the sea bed below the pole last week.
"Canada has taken its sovereignty too lightly for too long," Mr Harper said.
"This government has put a big emphasis on reinforcing, on strengthening our sovereignty in the Arctic."
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