The announcements by President Trump in April 2025, of unilateral hikes of 10–50 percentage points on U.S. import tariffs on all countries’ goods, are under threat of coming into force on July 9, 2025. This article estimates their likely effects on trade in alcoholic beverages, using a global model of national beverage markets. Various scenarios are compared. They suggest that if the tariff hike was restricted to just 20% on goods from the European Union, the value of global trade in each of the three beverages would shrink by one-tenth. But the U.S. tariff hikes are to apply to all countries’ goods, which are estimated to shrink global exports by 13% for wine, 22% for spirits and 33% for beer. In that broader scenario, most countries’ wine exports would shrink, but exports of beer and spirits would expand for some countries thanks to the trade divergence generated by the varying tariff hikes. If the increasing uncertainty associated with these developments led to a cumulated 2% drop in consumer spending, virtually all wine-exporting countries would sell less wine to both the U.S. and the rest of the world. That is, wine trade destruction would outweigh trade diversion.

How do geopolitical risk shocks impact monetary policy? Based on a panel of 18 economies, we develop and estimate an augmented panel Taylor rule via constant and time-varying local projection regression models. First, the panel evidence suggests that the interest rate decreases in the short run and increases in the medium run in the event of a geopolitical risk shock. Second, the results are confirmed in the time-varying model, where the policy reaction is accommodating in the short run (1 to 2 months) to limit the negative effects on consumer sentiment. In the medium term (12 to 15 months), the central bank is more committed to combating inflation pressures.

We systematically investigate prisoner’s dilemma and dictator games with valence framing. We find that give versus take frames influence subjects’ behavior and beliefs in the prisoner’s dilemma games but not in the dictator games. We conclude that valence framing has a stronger impact on behavior in strategic interactions, i.e., in the prisoner’s dilemma game, than in allocation tasks without strategic interaction, i.e., in the dictator game.

This paper assesses the role of political tensions between the USA and China and global market forces in explaining oil price fluctuations. To this end, we take part of the previous literature, which highlights (i) the importance of political events in explaining oil price dynamics, (ii) time-varying patterns in the oil market, and (iii) asymmetries in the impact of political tensions and uncertainty on oil prices. While this literature generally focuses on one of these features, we account for all of them simultaneously, allowing for a complete and meaningful investigation of political tensions on oil prices. To this end, we rely on quantile autoregressive distributed lag error-correction models, which are specifically designed to address both the long-run and short-run dynamics across a range of quantiles in a fully parametric setting. Our results show evidence of a quantile-dependent long-term relationship between oil prices and their determinants over the 1958–2022 period, which is also time varying across quantiles: the adjustment speed toward the long-term equilibrium is faster for the highest quantiles, fluctuating between 4% and 6% in the recent period. Overall, our findings highlight the increased role played by China in the oil market since the mid-2000s.

In response to the invasion of Ukraine, the EU and most other advanced economies imposed extensive sanctions on Russia, intending to harm its production capabilities and hinder its economic activities by restricting its access to international trade and financial markets. This paper develops an empirical framework based on the synthetic control method to assess the impact of the war and the following sanctions on bilateral and sectoral exports to Russia almost in real time. The war and the following sanctions reduced aggregate exports to Russia by a third between March and December 2022, with the effects being stronger for sanctioning countries than for non-sanctioning ones, albeit with substantial country-level heterogeneity within each group. Exports to Russia in high-tech sectors – relatively more targeted by trade sanctions – have been disproportionately affected.

Over a thousand years, military employment rises, peaks, and then falls. I argue that rising military shares were driven by structural change out of agriculture, and the recent declines are driven by substitution from soldiers toward military goods. I document evidence for this substitution effect and introduce a model of growth and warfare that reproduces the time series patterns of military expenditure and employment. The model also correctly predicts the cross-sectional patterns, and that military employment and expenditure shares are decreasing in income during wars. Finally, I show that faster economic growth can reduce military expenditure in the long run.

This empirical study extends the public choice literature on the allocation of death during war by examining the political economy of foreign fighter deaths in the Russo-Ukrainian War since the 24 February 2022 invasion. The study explores the roles played by various demographic factors, military institutions, and international trade relations in determining the number of foreign fighters from a variety of countries who have died in support of either Ukraine or Russia during the Russo-Ukrainian War. Unlike other related studies, this study also investigates the importance of, and finds evidence in support of, both economic freedom and a robust democracy in shaping the choices made by individuals around the globe to venture to, and die fighting on, the battlefields of Ukraine.

Access to safe drinking water is among the most important determinants of public health outcomes. We pair household-level data from Iraq together with data on armed conflict and adopt a generalized difference-in-differences approach to study the relationship between household drinking water sources and armed conflict intensity. We find that households located in conflict-affected areas are more likely to use piped water accessed at their homes or bottled water as their primary source of drinking water, but are less likely to use public water sources or tanked water delivered on trucks and carts. We explore the temporal dynamics of these adjustments as well as heterogeneity by household characteristics. We further present direct evidence that conflict-exposed households are less likely to travel to obtain water.

Land expansion by existing smallholder farmers (SHFs), aka stepping-up, is a major pathway to the rise of medium-scale farmers (MSFs) in Africa. In this paper, we investigate if and how armed conflicts constrain the ability of SHFs to transition to MSFs. We find that increased conflict intensity reduces the likelihood that a SHF will expand to a larger scale, especially for farmers who rely mostly on farm incomes, rather than off-farm incomes, for their livelihoods. These findings uphold other evidence that peace and stability influence private investment, including land-based investments, that are associated with economic transformation.

In an era where legally binding international trade agreements are increasingly shaping domestic regulation in a wide range of areas, the Trans-Pacific Partnership Agreement between the US, Australia, Japan and nine other Pacific Rim Countries, representing over 40% of world trade, has been described as setting the standards for 21st century trade agreements. This article analyses why the negotiations have dragged on for 5 years, and the resistance to the potential impacts of the Trans-Pacific Partnership Agreement on national democratic decision-making on health, environmental and other public interest regulation.

This article is Part II of a survey of Russia's position as one of the great powers and how it has evolved from 1815 to the present day. Part 1 ended on the eve of the Great Patriotic War (1941‒1945), and Part II begins where Part 1 left off, with some data on the Great Patriotic War and its influence on the USSR's position as a great power. It deals with post-war reconstruction and then considers the Cold War and post-Soviet Russia (1992‒2022). Attention is paid to Soviet economic policies, the reasons for the long-run decline in Soviet economic growth, and the state collapse of 1991. Explanatory theories used include List's economic recommendations for medium-developed countries, Wintrobe's political economy of dictatorship, and Tilly's analysis of the war–state relationship. It is concluded that a relatively poor country can become a great power and maintain that position for long periods if it has institutions that enable it to squeeze its population for military purposes.

This article is Part 1 of a survey of Russia's position as one of the great powers and how it has evolved from 1815 to the present day. It begins with the situation in 1815 and the path to it, and devotes attention to important Russian institutions then, soldiers' cooperatives, autocracy and serfdom. The subsequent wars and their consequences are discussed. The end of the Empire, the creation of the USSR and Soviet institutions are considered. Consideration is also given to the relative economic position of Russia/USSR and its changes over time. Attention is paid to the economic policies of Witte and Stalin. Explanatory theories used include List's economic recommendations for medium-developed countries, the institutional theories of Acemoglu, North and others, Modelski's evolutionary analysis of global politics and Tilly's analysis of the war–state relationship. Part 1 ends on the eve of the Great Patriotic War (1941).

The European Union (EU) has been using economic sanctions both as a foreign policy tool and as a liberal alternative to military action. Since 2006, it has been implementing general sanctions against the whole economy of Iran, affecting their trade relations, and since 2007, following the imposition of sanctions by the UN Security Council, it has also been using smart sanctions targeting Iranian entities and natural persons associated with the country's military activities. In a nonlinear autoregressive distributed lag (NARDL) model, this paper investigates the impact of general and targeted EU sanctions against Iran on quarterly bilateral trade values between the 19 members of the euro area (EA19) and Iran between the first quarter of 1999 and the fourth quarter of 2018. In a robustness NARDL specification, trade between Iran and the 28 members of the EU is analysed. In addition, a gravity model of bilateral trade between Iran and the EU member states is run in a robustness check. The results indicate that the EU's general sanctions have strongly hampered trade flows between the two trading partners in almost all sectors, except for the primary sectors. Furthermore, our study finds that the impact of smart sanctions targeting Iranian entities and natural persons is much smaller than the impact of general sanctions on total trade values and the trade values of many sectors. Smart sanctions affect the exports of most sectors from the EA19 and the EU28 to Iran, while they are statistically insignificant for the imports of many sectors from Iran. Thus, this paper provides evidence of the motivations behind smart sanctions, which target specific individuals and entities rather than the whole economy, unlike general sanctions, which have a negative impact on ordinary people.

The North American Free Trade Agreement (NAFTA) renegotiation has resulted in an updated agreement known as the United States–Mexico–Canada Agreement (USMCA). Given the contentious nature of the renegotiation process, we analyze the impacts of the USMCA relative to a “what if” scenario of failed NAFTA renegotiation to examine the economy-wide impacts of USMCA on bilateral trade, production, consumption, prices, and domestic and cross-border labor markets. Our results show that, had NAFTA renegotiation failed, the ensuing economic conditions would have created incentive for more, not fewer, migrant workers to enter the United States. USMCA benefits Mexican and Canadian consumers marginally but harms U.S. consumers slightly.

We develop a model of international agreements to price a transboundry externality and provide a new heuristic to aid in interpreting negotiation behavior. Under conservative assumptions, a country’s net benefits will be positive under an efficient pollution price if its share of global damages is less than half its share of worldwide abatement costs. We solve for a permit allocation scheme consistent with that heuristic such that every region will have positive net benefits in an agreement to price the pollution externality at the globally efficient level. We then apply this framework to climate change using regional data from Integrated Assessment Models and test the feasibility of a global climate change treaty. The results indicate that several regions have positive net benefits from a globally efficient price on carbon, including Western Europe, South Asia (including India), and Latin America. We then solve for a permit allocation scheme that should produce worldwide agreement on a climate treaty. Using the same model, we show that differential carbon taxes aimed at producing universal agreement would produce tax rate differences of an order of magnitude. We also argue that shares of global GDP might be an appropriate proxy for exposure to climate damages and find that a global climate treaty would be cost-benefit justified for all countries without transfers when that assumption is used.