U.S. President Donald Trump said on Sunday he will introduce new 25% tariffs on all steel and aluminum imports into the U.S., on top of existing metals duties, in another major escalation of his trade policy overhaul.

Trump, speaking to reporters on Air Force One on his way to the Super Bowl in New Orleans, said he will announce the new metals tariffs on Monday.

He also said he will announce reciprocal tariffs on Tuesday or Wednesday, to take effect almost immediately, applying them to all countries and matching the tariff rates levied by each country.