The United States signed an agreement with Saudi Arabia formalizing its participation in Expo 2030 Riyadh, scheduled for October 1, 2030, to March 31, 2031. US Secretary of State Marco Rubio and Saudi Foreign Minister Prince Faisal bin Farhan took part in the ceremony on the sidelines of the G20 ministerial meeting. Rubio called the agreement an important first step toward preparing the US pavilion at the exhibition in Riyadh.