President Donald Trump signed an executive order Wednesday to place an additional 25% tariff on India for its purchases of Russian oil, bringing the combined tariffs imposed by the United States on its ally to 50%.

Washington's deadline for Moscow to strike a ceasefire in Ukraine lapses on Friday, paving the way for potential White House tariffs on Russia's trade partners.

Swiss President Karin Keller-Sutter flew to Washington on Tuesday to seek talks with the Trump administration over the steep 39% tariff imposed on Switzerland. But Keller-Sutter was only able to meet with Secretary of State Marco Rubio, not with any of the primary tariff negotiators.