Core Viewpoint - Polish Prime Minister Donald Tusk warns that the end of military actions in the Russia-Ukraine war may not signify the end of European security, but rather the beginning of new controversies, particularly regarding economic relations with Russia and the potential revival of the "Nord Stream 2" gas pipeline project [1][12]. Group 1: Nord Stream Project Controversy - The "Nord Stream" pipeline was initially designed to bypass Ukraine and Poland, providing a direct gas supply route from Russia to Germany, reducing political interference and transportation costs [3]. - Germany has been a strong proponent of the project, viewing cheap Russian gas as crucial for its manufacturing competitiveness, with "Nord Stream 1" costing Germany and Russia a combined €7.4 billion [3][4]. - Tusk argues that the "Nord Stream 2" project should never have been built, as it represents a strategic compromise with Russia, increasing Europe's energy dependence and sending dangerous signals to the Kremlin [6][10]. Group 2: Security and Economic Dilemmas - Tusk highlights the potential pressure on Europe to re-establish economic ties with Russia post-war, with the "Nord Stream 2" project symbolizing this dilemma [12][14]. - The desire for cheap Russian energy to revive the economy may lead to a dangerous compromise on security, as Tusk emphasizes that economic cooperation with Russia is not merely a commercial decision but a strategic choice affecting national security [15]. - The ongoing internal conflicts within Europe regarding the investigation into the "Nord Stream" explosion reveal the fragility of the collective security consensus, as countries prioritize national interests over collaborative efforts [10][12]. Group 3: European Unity and Strategic Choices - Tusk's statement that "the era of European illusions has ended" reflects the underestimation of the threat posed by Putin, with many countries still hoping for compromise despite the clear dangers [17]. - The Brexit situation has exacerbated the crisis of unity within Europe, as the departure of the UK has weakened the EU's overall strength in diplomacy and defense [19]. - The ongoing struggle between economic interests and security principles, particularly highlighted by the "Nord Stream" project, underscores the need for Europe to find a balance and rebuild strategic consensus [21].