U.S. President Donald Trump threatened to impose stiff financial penalties on Russia if it does not end hostilities with Ukraine even as he pledged fresh weapons supplies for Kyiv.

¡°We¡¯re going to be doing very severe tariffs if we don¡¯t have a deal in 50 days, tariffs at about 100%,¡± Trump said Monday during a meeting with NATO Secretary General Mark Rutte at the White House.

Trump said the levies would come in the form of ¡°secondary tariffs,¡± without providing details. The U.S. president has used the term in the past to describe duties imposed on countries for trading with American adversaries.