They shared the consensus at a summit of the world’s 20 leading industrial and developing countries (G20) in Argentina on Monday. The talks come amid concerns about America’s new tariffs on steel and aluminum imports where participants expressed caution on risks posed by protectionist policies and reiterated their commitment to enhance free trade. They also called for solutions to monitor cryptocurrencies and protect holders. The financial chiefs discussed what a potential trade war would do to global economic growth. They also confirmed the need to keep close tabs on financial market movements, which have been volatile since February as marked by global stock market plunges.