Ageing Russian single-hulled oil tankers are threatening to cause a catastrophe in the Baltic sea, President Vladimir Putin has been warned by his neighbours and the European Union.

The Finnish prime minister Anneli Jaatteenmaki, and Margot Wallstrom, the EU environment commissioner, said yesterday they had both demanded the Russians use safer, double-hulled vessels and better-trained crews, but so far their pleas had been ignored ......
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