The tariff war unleashed by US President Donald Trump is putting a brake on the global economy, a brake even more pronounced on the two main contenders in the trade dispute: the United States and China, which has become the priority target of his tariff attack. The latest report from the International Monetary Fund (IMF) It's a new warning of the insecurity and instability being generated by Trump's economic aggression, a policy that there are signs could come back to haunt him like a boomerang.