Nicholas Eberstadt's analysis in Power and Population in Asia (Policy Review, February/March 2004) provides the foundation for examining population dynamics across the vast Asian/Eurasian region, which stretches from Russia-east-of-the-Urals to Japan and from Siberia to the Philippines, encompassing hotspots, backwater nations, rogue states, and industrial powers alike. As of mid-2000, this region held over 3.6 billion people, roughly three-fifths of the globe's total population, and contained seven of the world's ten most populous countries: China, India, Indonesia, Russia, Pakistan, Bangladesh, and Japan. The twentieth century witnessed what Eberstadt characterizes not simply as a population explosion but as a health explosion, driven almost entirely by declining mortality rates and dramatic improvements in life expectancy. Between 1950 and 2000, the population of these nations multiplied by a factor of 2.5, growing by nearly 2.2 billion people at an average annual pace exceeding 1.8 percent. This unprecedented growth captured the attention of the Western press from the 1970s onward, with concern over potential Asian demographic dominance sometimes bordering on hysteria. However, Eberstadt argues that this great demographic boom has essentially concluded in East Asia. Over the past three decades, the region has experienced pervasive and often dramatic declines in fertility levels, dropping between 40 to 60 percent. Some nations, such as Russia, have moved beyond mere slowing growth into actual population contraction, recording more deaths than births annually for over a decade. Sub-replacement fertility has become increasingly normative throughout Asia and Eurasia, characterizing every country in East Asia except Mongolia, along with Singapore and Thailand in Southeast Asia, and Sri Lanka and Kazakhstan in South and Central Asia. As a result, it is no longer accurate to describe the region as experiencing unprecedented population growth. Though population statistics often appear as unremarkable low percentages, such figures carry significant weight over time. Eberstadt illustrates this through the striking reversal between Russia and Pakistan: in 1975, Russia's population nearly doubled Pakistan's (134 million versus 70 million), yet by 2025 this relationship will have virtually inverted, with Pakistan's population more than doubling Russia's (250 million versus 124 million). This example demonstrates that population trends, even when expressed in modest annual percentages, can fundamentally reshape power configurations among nations over time—a phenomenon warranting continued investigation as one of three significant demographic developments affecting Asia and the wider world.