U.S. President Donald Trump on Thursday threatened Mexico with sanctions and tariffs in a dispute over water sharing between the two countries, accusing Mexico of breaking an 81-year-old treaty and "stealing the water from Texas Farmers.

As the Trump administration has imposed tariffs on Mexico, the United States' southern neighbor hopes some exemptions could make the country's auto industry a winner in the trade war. Tobias Käufer reports from Puebla.

As President Donald Trump's tariffs threaten the US economy, questions are being asked about how long the dollar can maintain its status as the world's key trading and reserve currency.