As investigators piece together clues, Russia has quietly taken steps to begin expensive repairs on the giant gas pipeline, complicating theories about who was behind September’s sabotage.
The leaks in the Nord Stream under the Baltic Sea heightened fears of shortages because of the clash with Russia, and showed how vital infrastructure could be at risk.
On the eve of a European Union meeting to debate a gas conservation plan to make the bloc less vulnerable to a Russian squeeze, Moscow slashed the flow to Germany.
