Why do some attempts to conclude alliance treaties end in failure? From the inability of European powers to form an alliance that would stop Hitler in the 1930s, to the present inability of Ukraine to join NATO, states frequently attempt but fail to form alliance treaties. In Arguing about Alliances, Paul Poast sheds new light on the purpose of alliance treaties by recognizing that such treaties come from negotiations, and that negotiations can end in failure. In a book that bridges Stephen Walt's Origins of Alliance and Glenn Snyder's Alliance Politics, two classic works on alliances, Poast identifies two conditions that result in non-agreement: major incompatibilities in the internal war plans of the participants, and attractive alternatives to a negotiated agreement for various parties to the negotiations. As a result, Arguing about Alliances focuses on a group of states largely ignored by scholars: states that have attempted to form alliance treaties but failed. Poast suggests that to explain the outcomes of negotiations, specifically how they can end without agreement, we must pay particular attention to the wartime planning and coordinating functions of alliance treaties. Through his exploration of the outcomes of negotiations from European alliance negotiations between 1815 and 1945, Poast offers a typology of alliance treaty negotiations and establishes what conditions are most likely to stymie the attempt to formalize recognition of common national interests.

Why do some attempts to conclude alliance treaties end in failure? From the inability of European powers to form an alliance that would stop Hitler in the 1930s, to the present inability of Ukraine to join NATO, states frequently attempt but fail to form alliance treaties. In Arguing about Alliances, Paul Poast sheds new light on the purpose of alliance treaties by recognizing that such treaties come from negotiations, and that negotiations can end in failure. In a book that bridges Stephen Walt's Origins of Alliance and Glenn Snyder's Alliance Politics, two classic works on alliances, Poast identifies two conditions that result in non-agreement: major incompatibilities in the internal war plans of the participants, and attractive alternatives to a negotiated agreement for various parties to the negotiations. As a result, Arguing about Alliances focuses on a group of states largely ignored by scholars: states that have attempted to form alliance treaties but failed. Poast suggests that to explain the outcomes of negotiations, specifically how they can end without agreement, we must pay particular attention to the wartime planning and coordinating functions of alliance treaties. Through his exploration of the outcomes of negotiations from European alliance negotiations between 1815 and 1945, Poast offers a typology of alliance treaty negotiations and establishes what conditions are most likely to stymie the attempt to formalize recognition of common national interests.

This paper surveys some of the strategic aspects that emerge if players fight in an alliance against an enemy. The survey includes the free-rider problem and the hold-up problem that emerges in the baseline model, the role of supermodularity in alliance members' effort contributions, the role of budget constraints, the role of information transfer inside the alliance, and the role of in-group favoritism.

In Reliability and Alliance Interdependence, Iain D. Henry argues for a more sophisticated approach to alliance politics and ideas of interdependence. It is often assumed that if the United States failed to defend an ally, then this disloyalty would instantly and irrevocably damage US alliances across the globe. Henry proposes that such damage is by no means inevitable and that predictions of disaster are dangerously simplistic. If other allies fear the risks of military escalation more than the consequences of the United States abandoning an ally, then they will welcome, encourage, and even praise such an instance of disloyalty. It is also often assumed that alliance interdependence only constrains US policy options, but Henry shows how the United States can manipulate interdependence to set an example of what constitutes acceptable allied behavior. Using declassified documents, Henry explores five case studies involving US alliances with South Korea, Japan, the Republic of China, the Philippines, Australia, and New Zealand. Reliability and Alliance Interdependence makes a substantial contribution to our understanding of how America's alliances in Asia function as an interdependent system.

Over the years many transnational labor alliances have succeeded in improving conditions for workers, but many more have not. In The New Politics of Transnational Labor, Marissa Brookes explains why this dichotomy has occurred. Using the coordination and context-appropriate (CCAP) theory, she assesses this divergence, arguing that the success of transnational alliances hinges not only on effective coordination across borders and within workers' local organizations but also on their ability to exploit vulnerabilities in global value chains, invoke national and international institutions, and mobilize networks of stakeholders in ways that threaten employers' core, material interests. Brookes uses six comparative case studies spanning four industries, five countries, and fifteen years. From dockside labor disputes in Britain and Australia to service sector campaigns in the supermarket and private security industries to campaigns aimed at luxury hotels in Southeast Asia, Brookes creates her new theoretical framework and speaks to debates in international and comparative political economy on the politics of economic globalization, the viability of private governance, and the impact of organized labor on economic inequality. From this assessment, Brookes provides a vital update to the international relations literature on non-state actors and transnational activism and shows how we can understand the unique capacities labor has as a transnational actor.

With the costs of war dominating our economic news and discussions, Paul Poast’s new text is a needed, relevant and thought-provoking new offering. Written in an extremely accessible manner, the book is an interesting addition to a course at any level. The book’s low price makes it a perfect complement to a Principles text, a Social Issues book, or any upper-level course on war or international security into which an instructor would like to add some economic data or theory.