Gas deliveries from Russia to Germany have stopped for a period of 10 days for maintenance work on the Nord Stream 1 Baltic Sea pipeline, causing even more uncertainty in Europe’s biggest economy over energy supplies as the war in Ukraine rages. Nord Stream 1 is the most important connection for natural gas flows to Germany, and supplies through the pipeline had already been reduced to about 40% of capacity. This also had a knock-on effect on gas to other countries further west. With tensions between Europe and Russia at their highest in decades over the war in Ukraine, officials are concerned…