In 'Polar War', Kenneth R. Rosen presents a comprehensive analysis of the strategic challenges posed by the warming Arctic, where nations are increasingly vying for dominance over natural resources and shipping routes. He describes the Arctic as a region that can be weaponized due to its unique geographical characteristics. The book reveals how a resurgent Russia is rapidly expanding its military capabilities in the Arctic, including the construction of bases and the enhancement of its northern fleet. In contrast, Western Arctic countries, particularly the United States, are portrayed as unprepared and lagging behind. Rosen's extensive travels across the Arctic, including Greenland, Iceland, and Alaska, highlight the urgent need for the U.S. to bolster its defense posture. He notes that while recent legislation aims to increase the number of icebreakers, it will take years to achieve operational readiness. The book also discusses the implications of climate change, which is leading to more frequent extreme weather events, further stressing the U.S. Coast Guard. Ultimately, 'Polar War' serves as both a travelogue and a call to action, urging nations to recognize the growing threats in the Arctic and take proactive measures to secure their interests.