How does the pipeline fit into Ukraine-Russia crisis?
Fresh warnings from the US over the Nord Stream 2 gas pipeline have thrust the controversial project back into the spotlight.
The US has indicated the new pipeline between Russia and Germany will not go ahead, and officials in Berlin say the project could face sanctions if Russia sends troops into Ukraine.
The multi-billion dollar pipeline is increasingly being seen as a key bargaining chip in Western efforts to prevent a possible Russian invasion.
So what is the pipeline and why is it still so divisive? It’s a new 1,200km (745-mile) gas pipeline running from western Russia to north-eastern Germany under the Baltic sea.