Trump tariffs: Next up, steel and aluminum

From the BBC World Service: U.S. President Donald Trump plans a 25% import tax on all steel and aluminum entering the U.S. China, Canada and Mexico — some of the biggest suppliers — could be hit hard. Also: China’s trade flow shifted in response to tariffs, three Baltic nations cut ties with Russia’s power grid, and global leaders and tech bosses meet in Paris to figure out how to regulate artificial intelligence.