Berlin has stepped up pressure on Moscow to investigate the poisoning of Russian opposition activist Alexei Navalny, indicating for the first time that the affair could imperil a pipeline project to carry gas from Russia to Germany.
Heiko Maas, German foreign minister, said he hoped Russia would not force Berlin to “change our stance” by failing to co-operate with the investigation into Mr Navalny’s poisoning.
Angela Merkel, the German chancellor, has previously said the two issues should be “decoupled”.
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