Energy security sits at the heart of Europe’s confrontation with Russia. Moscow spent decades turning Russian gas into a political weapon, and the war in Ukraine forced a scramble to replace those hydrocarbons and rethink energy geopolitics across the continent. This hub tracks how allied economies are rebuilding energy security: cutting dependence on Russian gas, defending pipeline security and the energy infrastructure that carries power across borders, scaling up liquefied natural gas imports and LNG supply from the United States and other partners, and managing an energy transition that is also a matter of national security. Fellows and analysts examine the vulnerabilities Russia has exploited, the resilience of critical pipeline security, and the pace of the green transition against the demands of deterrence. From liquefied natural gas terminals to the politics of the energy transition, the hub follows the decisions shaping whether Europe can power itself without fear. Explore analysis and commentary on the energy security choices defining the transatlantic response.