On September 20, 2026, the Center for International Security and Strategy (CISS), Tsinghua University, held the seventh Strategic Youth orientation and leadership transition meeting. More than twenty members from universities at home and abroad, including Tsinghua University, Peking University, the University of Cambridge, and Princeton University, attended the event in a hybrid online and offline format. CISS Director Da Wei; Deputy Directors Chen Qi and Liu Feng; Associate Fellow Sun Chenghao; Postdoctoral Fellow and Director of Media and Communications for the China Forum Wen Jing; Postdoctoral Fellow and Assistant Researcher Wang Congyue; Program Officer Guo Mingxinyi; and representatives of previous Strategic Youth cohorts were present.

From August 24 to September 4, 2026, the delegation of the Tsinghua University "International Youth Dialogue: New Voices on China-US Relations" China-US youth exchange program conducted a twelve-day exchange visit to Washington, D.C., Philadelphia, and New York. The delegation was led by Professor Da Wei, Director of the Center for International Security and Strategy (CISS), Tsinghua University, and Zhang Runzhou, Deputy Director of the Tsinghua Center for Global Competence Development. It comprised ten outstanding undergraduates from various schools and departments of Tsinghua University and three doctoral and master's student teaching assistants.

On September 23, 2026, the North Courtyard 3:30 · "Surveying the World" country and area studies seminar on "Summit Diplomacy and China-US Relations" was held at the North Courtyard of Tsinghua University. The event was co-hosted by the Center for International Security and Strategy (CISS), Tsinghua University, and the Tsinghua Center for Global Competence Development, and co-organized by the Tsinghua University Student Association for International and Strategic Studies (SAISS). Dr. Wang Zheng, Visiting Scholar at CISS, Professor at the School of Diplomacy and International Relations of Seton Hall University, and Director of its Center for Peace and Conflict Studies, was invited as the keynote speaker.

On the afternoon of September 18, a delegation from the ISEAS–Yusof Ishak Institute of Singapore visited the Center for International Security and Strategy (CISS), Tsinghua University. The two sides held in-depth exchanges on topics including China-US relations, the global governance of artificial intelligence, China's relations with ASEAN countries, and the security situation in the Asia-Pacific region.

​On the afternoon of September 17, 2026, the delegation from the Centre for Humanitarian Dialogue (HD), comprising Romain Grandjean, Director of the Middle East and North Africa; Francis Ward, Senior Programme Manager; Tamás Szenderák, Senior Country Director for Syria; Patrick Hänni, Senior Advisor; Yao Ying, Programme Manager; and Sharina, Programme Officer, paid a visit to the Center for International Security and Strategy (CISS), Tsinghua University.

On September 19, 2026, Da Wei, Director of the Center for International Security and Strategy (CISS) and Professor in the Department of International Relations at Tsinghua University, was invited to attend Global Town Hall 2026 hosted by the Foreign Policy Community of Indonesia (FPCI), and delivered in the Session 1 of the conference.

On the morning of September 17, 2026, Sangsin Lee, Director and Senior Research Fellow of the Unification Policy Research Division, and Chulki Hong, Research Fellow of the Human Rights Research Division, both from the Korea Institute for National Unification (KINU), visited the Center for International Security and Strategy (CISS), Tsinghua University.

On September 17, 2026, the China Forum of the Center for International Security and Strategy (CISS), Tsinghua University, successfully held the 12th "China Forum - Face to Face Dialogue" exchange event. Under the theme of "Outlook on the Trump-Xi Summit: New Dynamics of China-US Interaction", participating experts focused on the core issues that might be covered in the upcoming meeting between the two heads of state, and conducted in-depth discussions and exchanges in light of the new dynamics in China-US relations.

On September 16, 2026, the Center for International Security and Strategy (CISS), Tsinghua University, successfully held the "Conversation with the Leading Minds: Understanding the Modern Middle East through The Damascus Events" seminar. Eugene Rogan, Fellow of the British Academy, Professor of Modern Middle Eastern History at Oxford University, and Director of the Middle East Centre, was invited to deliver a keynote presentation.

On September 4, the Center for International Security and Strategy (CISS), Tsinghua University, successfully hosted an expert dialogue on major-power relations and the Ukraine crisis. Participants shared their views and exchanged perspectives on issues including the transition in the international order, the future trajectory of the Russia-Ukraine conflict, the basis for China-Russia cooperation, and European strategic autonomy.

On the afternoon of August 13, David Liang, Deputy Chief of Mission and Minister-Counsellor of the Embassy of Singapore in China, led a delegation including First Secretary (Political) Song Mingwei and First Secretary (Political) Will Lee to visit the Center for International Security and Strategy (CISS) at Tsinghua University.

On the afternoon of June 15, Per Augustsson, Ambassador of Sweden to China, Mattias Chu, Counsellor for Political Affairs and Head of the Political Section at the Embassy of Sweden in China, and Veronika Kramar Mandelj, Second Secretary at the Embassy, visited the Center for International Security and Strategy (CISS) at Tsinghua University.