An international astronaut will join U.S. astronauts on the moon by decade’s end under an agreement announced Wednesday by NASA and the White House.

The news came as Vice President Kamala Harris convened a meeting in Washington of the National Space Council, the third such gathering under the Biden administration.

There was no mention of who the international moonwalker might be or even what country would be represented. A NASA spokeswoman later said that crews would be assigned closer to the lunar-landing missions, and that no commitments had yet been made to another country.