Nord Stream 2, Russia’s gas pipeline across the Baltic Sea, has already driven a wedge between Germany and the US and sown discord in Europe. Now, as fears mount that Russia will attack Ukraine, it has become a bone of contention inside the German government itself.

Germany’s coalition partners are split on the pipeline, which its critics say will hugely increase Europe’s reliance on Russian natural gas, with the left-of-centre Social Democrats largely backing it and the Greens opposed.

Green foreign minister Annalena Baerbock, who will make her first official trip as foreign minister to Kyiv on Monday and Moscow on Tuesday, has indicated that Nord Stream 2, which is complete but has yet to be certified, cannot go ahead if Russia invades its western neighbour.