Arnold Schwarzenegger and Kamala Harris convened at the 10th Austrian World Summit in Vienna on June 16, 2026, to discuss climate action and global solutions at the Vienna Hofburg. The anniversary edition of the international climate conference, held under the motto “WE ARE UNSTOPPABLE,” brought together the former U.S. Vice President and the founder of the Schwarzenegger Climate Initiative to address urgent environmental challenges.
Harris, who served as the 49th Vice President of the United States from 2021 to 2025, was announced as a special guest for the summit in early June. Her participation marked a significant moment for the climate conference, which has served as a platform for concrete climate solutions and international cooperation since its inception in 2017.
Schwarzenegger, hosting the summit, emphasized the collaborative spirit needed to advance climate action. “When leaders and citizens work together, we are unstoppable,” he said, highlighting the summit’s focus on demonstrating that the world possesses the necessary tools and solutions to address the climate crisis. The summit brought together international leaders, experts, innovators, and changemakers committed to accelerating climate action and eliminating pollution.
During her time as Vice President, Harris worked to strengthen global alliances and helped advance historic legislation, including the largest climate investment ever passed in the United States. Monika Langthaler, Director of the Schwarzenegger Climate Initiative, underscored the significance of Harris’s attendance, stating that her participation signals “that climate action, democracy, justice, and economic opportunity must go hand in hand.”
The 10th Austrian World Summit featured a lineup of prominent speakers alongside Schwarzenegger and Harris, including Austrian Federal President Alexander Van der Bellen, U.S. Vice President Tim Walz, and Danish Minister Dan Jørgensen. The conference was organized by the Schwarzenegger Climate Initiative at the Vienna Hofburg, a historic venue chosen to host this year’s anniversary edition of the international climate conference.
Sources
- The Schwarzenegger Climate Initiative — Kamala Harris announcement as special guest, event details, and Schwarzenegger’s quote on summit goals
- Associated Press — Live coverage of Arnold Schwarzenegger and Kamala Harris speaking at the climate summit
- Vienna.at — Details on Harris’s participation and summit discussion focus
- Austrian World Summit official website — Speakers list, event date, venue, and summit motto for 2026
