By Steve Holland and Alexandra Alper WASHINGTON (Reuters) -Shares of U.S. Steel rose 5% on Monday, as a $14.9-billion bid for the well-known American firm from Nippon Steel approached the finish line and after details of the U.

U.S. Steel’s so-called “partnership” with Nippon appears to be nearing its end after about 18 months after it was announced.

U.S. Steel and Japan's Nippon Steel said Trump had approved their merger after they signed a national security agreement with the U.S. government.