President Donald Trump has approved a partnership between US Steel and Nippon Steel, the companies said in a release on Friday.

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

The companies said they had entered into an agreement with the U.S. government to alleviate any national security concerns.