In the wake of Russia’s invasion of Ukraine, Poland has emerged as the strategic anchor of NATO’s eastern flank, reshaping the continent’s security landscape. Janusz Bugajski explores how Warsaw’s military modernization, economic resilience, and assertive diplomacy have positioned it as a rising power capable of countering Russian imperialism and leading regional defense efforts. This timely and incisive book reveals Poland’s transformation from a peripheral actor to a pivotal force in Europe’s evolving geopolitical order.