A pioneering examination of history, current affairs, and daily life along the Russia–China border, one of the world’s least understood and most politically charged frontiers.

The border between Russia and China winds for 2,600 miles through rivers, swamps, and vast taiga forests. It’s a thin line of direct engagement, extraordinary contrasts, frequent tension, and occasional war between two of the world’s political giants. Franck Billé and Caroline Humphrey have spent years traveling through and studying this important yet forgotten region. Drawing on pioneering fieldwork, they introduce readers to the lifeways, politics, and history of one of the world’s most consequential and enigmatic borderlands.

It is telling that, along a border consisting mainly of rivers, there is not a single operating passenger bridge. Two different worlds have emerged. On the Russian side, in territory seized from China in the nineteenth century, defense is prioritized over the economy, leaving dilapidated villages slumbering amid the forests. For its part, the Chinese side is heavily settled and increasingly prosperous and dynamic. Moscow worries about the imbalance, and both governments discourage citizens from interacting. But as Billé and Humphrey show, cross-border connection is a fact of life, whatever distant authorities say. There are marriages, friendships, and sexual encounters. There are joint businesses and underground deals, including no shortage of smuggling. Meanwhile some indigenous peoples, persecuted on both sides, seek to “revive” their own alternative social groupings that span the border. And Chinese towns make much of their proximity to “Europe,” building giant Russian dolls and replicas of St. Basil’s Cathedral to woo tourists.

Surprising and rigorously researched, On the Edge testifies to the rich diversity of an extraordinary world haunted by history and divided by remote political decisions but connected by the ordinary imperatives of daily life.

Throughout history, human societies have been organized preeminently as territories—politically bounded regions whose borders define the jurisdiction of laws and the movement of peoples. At a time when the technologies of globalization are eroding barriers to communication, transportation, and trade, Once Within Borders explores the fitful evolution of territorial organization as a worldwide practice of human societies. Master historian Charles S. Maier tracks the epochal changes that have defined territories over five centuries and draws attention to ideas and technologies that contribute to territoriality’s remarkable resilience.

Territorial boundaries transform geography into history by providing a framework for organizing political and economic life. But properties of territory—their meanings and applications—have changed considerably across space and time. In the West, modern territoriality developed in tandem with ideas of sovereignty in the seventeenth century. Sovereign rulers took steps to fortify their borders, map and privatize the land, and centralize their sway over the populations and resources within their domain. The arrival of railroads and the telegraph enabled territorial expansion at home and abroad as well as the extension of control over large spaces. By the late nineteenth century, the extent of a nation’s territory had become an index of its power, with overseas colonial possessions augmenting prestige and wealth and redefining territoriality.

Turning to the geopolitical crises of the twentieth century, Maier pays close attention to our present moment, asking in what ways modern nations and economies still live within borders and to what degree our societies have moved toward a post-territiorial world.