President Trump’s tariffs on Canada, China and Mexico could upend U.S. trade. These nine charts show what’s at stake, what comes next and why it matters.

A new trade war has begun, and this time, the stakes are higher than ever. President Donald Trump has imposed massive tariffs on Canada, Mexico, and China, triggering immediate retaliation and a market backlash.

U.S. stock index futures tumbled on Monday as fears of a full-blown trade war and its impact on the global economy jolted markets around the world after President Donald Trump levied steep tariffs on Mexico,