The ISS represented one of humanity's first international efforts to explore space - with NASA (United States of America), the Russian Federal Space Agency (Russia), the Japan Aerospace Exploration Agency (Japan), the Canadian Space Agency (Canada), and the European Space Agency all participating in the project.
The first module of the space station was put into orbit in November 1998. Construction was delayed by the destruction of the space shuttle Columbia. However construction resumed, and during the 21st century the space station was expanded considerably. (Star Trek: Enterprise credits sequence)
Shortly after the founding of Starfleet in the early 21st Century, Voula and the Core beamed aboard the ISS as a waypoint, before beaming over to a Romulan ship further out in the Solar System. (ST performance: Star Trek Live)