Following Russia's invasion of Ukraine in 2022, Europe has significantly increased its defense spending, marking a shift from prioritizing economic concerns to addressing security imperatives. This surge is driven by the realization of renewed threats, the need to meet NATO's 2% GDP spending target, and a push to revitalize Europe's defense industry. Furthermore, the evolving nature of warfare, encompassing cyber and hybrid threats, necessitates new investments beyond traditional military hardware. While public opinion largely supports increased defense spending, balancing these costs with other societal needs remains a critical challenge. Ultimately, Europe's rearmament signifies a departure from an era of assumed peace and a move towards a more assertive geopolitical stance.