The partnership between US Steel and Nippon Steel has reached a new phase, with an agreement on US national security guarantees, in addition to the so-called "golden share" advantage obtained by President Donald Trump's administration.

President Donald Trump issued an executive order on Friday officially giving the green light to Nippon Steel Corporation's multi-billion-dollar purchase of U.S. Steel Corporation.

US Steel's collaboration with Nippon Steel has received approval after national security assurances were confirmed, retaining the "golden share" benefit. Former President Trump endorsed the partnership through an executive order,