President Donald Trump will unleash a fresh round of tariffs targeting both allies and adversaries alike, signaling an aggressive stance on trade policy as he approaches what he has called “Liberation Day”. Trump has argued that tariffs protect US industries from unfair foreign competition, raise money for the federal government and provide leverage to demand concessions from other countries. But economists stress that broad tariffs at the rates suggested by Trump could backfire.n18oc_world n18oc_crux