Trade Wars & its Impact on Economies, Businesses & Societies 

Tariffs, sanctions, and crypto-evasion: Why protectionism always generates global instability and fuels the black market

Drawing from the specialization week discussions led by Prof. Marc Prat Baque and Prof. Francesco Celotto at the Barcelona campus, and reflecting the valuable participation of our bachelor student body, this analysis examines the complex realities of trade conflict. The impulse to protect domestic industries—often captured by populist slogans—drives policymakers to erect trade barriers, primarily tariffs. While appealing as a tool to shift production inward, protectionism is consistently shown by history to be a short-term palliative that generates significant, unintended, and globally destabilizing economic costs. 

Protectionist tariffs are effectively taxes paid by domestic consumers and importers. This strategy of promoting national strength invariably fails when reciprocal retaliation begins. The classic example, the Smoot-Hawley Tariff Act of 1930, triggered a global trade war that exacerbated the Great Depression by causing international trade to plummet by nearly 66%. Economists agree that such protectionism results in a deadweight loss, reducing global welfare and creating market inefficiencies that ultimately harm the same domestic sectors they were meant to save. 

Modern conflict: evasion and asymmetric costs 

Trade restrictions today have evolved into “soft diplomatic tools,” with comprehensive sanctions being deployed against geopolitical rivals. However, this approach carries hard, asymmetric costs, and its efficacy is complicated by systematic evasion. Excessive trade barriers create massive price gaps, offering lucrative arbitrage opportunities that fuel organized criminal networks through smuggling and counterfeiting (e.g., tariff evasion during recent US-China friction). Furthermore, the effectiveness of financial sanctions has been severely complicated by the rise of cryptocurrency.  The decentralized nature of digital assets allows sanctioned nations and entities (such as Russia, Iran, and North Korea) to move value rapidly across borders, bypassing traditional financial gatekeepers like SWIFT. 

This mechanism, sometimes called the “Axis of Evasion,” enables alternative trade settlements that circumvent international enforcement efforts. In conflicts like the Russian-Ukrainian war, these sanctions and trade barriers impose substantial global instability, demonstrated by massive supply chain disruptions that spiked global prices for essential goods like food and energy. This volatility disproportionately harms vulnerable developing economies that rely on these basic imports. In conclusion, trade isolationism and protectionist tools are proven to amplify global risk and directly harm civil society. A renewed focus on multilateral cooperation and resilient, open trade systems is essential to mitigate these complex economic and geopolitical damages.