Stocks stage a comeback from the early Asian session, across Europe and in the US. Bonds also bounce back following a sharp selloff. China vows to fight back after the US escalated its trade war with the threat of a 50% additional tariff. Seema Shah of Principal Asset Management says the Federal Reserve still needs to wait-and-see before reacting to tariffs. Nancy Tengler of Laffer Tengler Investments calls out the administration's "amateur hour" tariff roll out. “Bloomberg Brief” delivers the market news, data and analysis you need to set your agenda..