Europe was investigating leaks in two Russian gas pipelines that churned up the Baltic Sea with bubbles on Tuesday and raised concerns from Copenhagen to Moscow about sabotage on infrastructure at the heart of a European energy standoff.
But it remained far from clear who might be behind any foul play, if proven, on the Nord Stream pipelines that Russia with European partners spent billions of dollars building.
Poland's PM blamed sabotage, without citing evidence, and the Danish premier said it could not be ruled out.
Russia, which has slashed gas deliveries to Europe after the West imposed sanctions, said
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