正式断气！乌克兰、俄罗斯、欧盟、斯洛伐克都输了，只有美国赢了

Group 1 - Ukraine has officially ceased the transit of Russian natural gas, marking the end of a significant energy artery for Europe that has lasted for decades [1][3] - The pipeline previously transported over 40 billion cubic meters of gas annually, accounting for approximately 15% of the EU's total natural gas imports [3] - Ukraine's loss of transit fees, which amounted to over $2 billion annually, poses a significant economic challenge for the already struggling country [3][5] Group 2 - Russia will face increased costs as it seeks alternative routes for the over 30 billion cubic meters of gas that were previously transported through Ukraine [5][6] - The EU is now under pressure due to reduced energy supply, with reliance on more expensive U.S. liquefied natural gas (LNG) to fill the gap, leading to higher energy costs for European businesses [6][8] - Slovakia is particularly affected as it heavily depended on the now-discontinued pipeline for its gas supply [6] Group 3 - The U.S. emerges as the primary beneficiary of this situation, as Europe will need to source LNG from the U.S. to replace the lost Russian gas, despite the higher costs [8][10] - The reduction of Europe's dependency on Russian energy increases its reliance on U.S. energy, aligning with U.S. strategic interests [10][11] - This scenario reflects a deeper geopolitical struggle, with the U.S. successfully severing the energy ties between Europe and Russia, while simultaneously boosting its own energy exports [11][14] Group 4 - The situation underscores the importance of energy security as a component of national security, highlighting the risks of over-reliance on foreign energy sources [14][16] - The event serves as a reminder that international relations are driven by interests rather than permanent alliances, emphasizing the need for self-sufficiency in energy [16]