348 Save for later Print Download Share LinkedIn Twitter The US and the EU stepped up their global diplomatic push this week to round up extra natural gas and LNG supplies for Europe in the event Russia marches into Ukraine and crucial exports are cut off. Russia accounts for about a third of European gas supply and any lengthier disruption of exports would pose a serious challenge for the EU, even without a complete halt of flows. But public pledges for additional supplies have been difficult to secure due to the limited availability of spot volumes and some exporters seemingly putting forward their own demands, raising the stakes for Europe's energy sector.