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Abstract
Stablecoins are second generation cryptocurrencies, aimed at maintaining their value stable with respect to official currencies. The most famous example is perhaps represented by libra, the cryptocurrency announced by Facebook in 2019 and yet to be issued; the most widespread is tether, with a market capitalization of almost 10 billion dollars and a daily transaction volume of almost 50 billion dollars, which makes it the most used cryptocurrency. The diffusion of stablecoins is hardly surprising. By minimizing volatility – the main flaw of first generation cryptocurrencies, including bitcoin –, stablecoins are expected to play an even more important role on a global scale within a few years. Our contribution deals not with the economic, but specifically with the geopolitical factors that could foster the use of stablecoins for strategic and military purposes. In particular, we focus on how such payment instruments, together with other alternative electronic payment systems, could be used as a means to circumvent economic sanctions and ultimately as a challenge to the hegemony of the US dollar in the international monetary system.

AbstractIn this paper, we apply an algorithm developed by Martin Weitzman to quantify the extent of diversity among the business models of financial intermediaries at an international level. In particular, we investigate the relationship between the diversity of the business models of EU national banking systems and their profitability and riskiness. We show how Weitzman's approach can be generally applied to the issue at hand; as a by‐product, the analysis allows us to assess whether the diversity among banking systems was affected by the imported systemic financial crises of 2007/8 as well as its domestic sequel centered on the sovereign debt crisis that occurred in 2010–12. The motivation for this paper is twofold. First, we provide an operational measure of the diversity of business models among banking sectors. Second, we enrich the economic literature relating to banking business models by providing a macro‐founded analysis. To this end, we highlight the range of diversity of national banking business models correlated with high performances in terms of profitability and riskiness.

The Covid-19 crisis has radically changed the game for world and EU-economies, and urged for a reappraisal of the guidelines for a healthy management of public expenditure. This requires a deep rethinking of the role of public debt in modern capitalistic economies and of efficient, equitable and politically viable ways of financing it. This paper outlines the main operating framework of a Debt Agency tasked with the management of the Eurozone sovereign debts and the creation of a truly European safe asset. The framework leverages on the potential irredeemable nature of sovereign debts in order to build a common bond. By structurally filtering liquidity risk, the Debt Agency can price the Member States' funding costs by referring only to their credit risk, as defined by EU agreed rules. The common bond issued by the Debt Agency thus avoids mutualisation by design; hence, it can be directly bought by the ECB. Due to its structural intertemporal sustainability, the Debt Agency's framework delineated in this paper can serve as a benchmark for institutional and political decisions. In this perspective, a counterfactual exercise has been conducted in order to evaluate the future potential impact of the Debt Agency as well as the past distortions in market pricing of Member States' fundamental risk due to market mispricing of the liquidity risk.

AbstractWe investigate to what extent personal proximity and similarity in professional and political attributes, besides scientific factors, help explaining citations between economists. We do so by using a unique dataset of all academic economists based in the United Kingdom, created specifically for this study by merging RePEc data on works published in the past four decades with information collected by manually processing their curriculum vitae (CVs). We investigate directed citations within each pair of authors active in a same year, finding that social factors play an important role as predictors of citations. An author is systematically more likely to cite another economist not only if they work on similar topics, but most relevantly if they have been co‐authors, faculty colleagues, alumni of the same Alma Mater, and even if they express similar political views. The implication is that citations do not signal the intrinsic quality of research outputs only, but they also capture social and professional connections. When citation counts are used to reward academics, economists have an incentive to join many and large professional communities as doing so would increase their predicted citations.