According to an old African proverb, “When elephants fight, it is the grass that suffers.” The same is true for full-blown trade wars: when major economies clash, developing countries will be among the hardest hit.On 1 June, the United States’ (US) administration imposed import tariffs of 25 percent on steel and 10 percent on aluminium. The levies will affect not just China, but also Canada, Mexico, and the countries of the European Union (EU).