"Russia has been excluded from the tariff because it sells almost no goods which could be made in the United States," Christopher Weafer, CEO of Russia-focused consulting firm Macro-Advisory, told Newsweek. "But it still provides things the U.S. needs—titanium, nuclear fuel, fertilizer, and other materials such as platinum."

Japan's top trade negotiator on Thursday urged the U.S. to reconsider all tariffs on Japan after President Donald Trump joined in directly in the first round of bilateral trade talks between the two nations.