I don't get all the hype about tankers... A tanker load would do significant structural damage to the building, would be a huge risk in city with a lot of tall structures, would be totally ineffective on the bulk of the fire (that's below the roof), and would require pulling out all the firefighters on the scene, significantly reducing the overall firefighting capacity.
This is basically what the chief of the Paris fire brigade told the news (dumping a load of water on the building would finish destroying it). Add to that the fact that the closest Canadairs are 600 miles away and designed to draw water from the sea.
