The 25 percent tariffs on imported steel and aluminum are the latest salvo in his ongoing effort to overhaul the U.S. trading relationship with the rest of the world.

President Donald Trump on Monday imposed 25 percent tariffs on all steel and aluminum imports to the United States. The proclamations impose a 25 percent tariff on steel imports on all countries, and raise his 2018 aluminum tariffs from 10 percent to 25 percent,

South Korea's acting President Choi Sang-mok on Tuesday said his government would seek talks with the U.S. administration about Washington's 25% tariffs on steel and aluminium imports to reflect the interests of its companies.