China's first quarter economic growth data is due as a tit-for-tat trade war with US President Donald Trump escalates China, the world's second biggest economy, is bracing for the full impact of the levies as it continues to struggle with slow growth At a glance, here's what you need to know about the tariffs that are rocking the global economy:

Trump has defended his tariff strategy as a way to restore U.S. manufacturing and push trading partners to eliminate what he calls unfair barriers to American goods. Why It Matter