This article reflects on the often-criticized dependence of European allies on American security guarantees, noting that while they enjoyed the safety provided by the U.S., they reduced their own defense expenditures significantly. The author points out that previous U.S. presidents, including Obama and Biden, also urged Europe to bolster its military capabilities, but did not exert sufficient pressure to achieve this. Trump, however, took a more aggressive stance, requiring NATO members to increase their military spending and take greater responsibility for Europe's security, particularly in light of the ongoing geopolitical challenges.