Mark Sidel spoke on threats to nonprofit self-regulation in the United States, and on the challenges to the nonprofit sector and philanthropy in the US today at the 2026 biennial conference of the International Society for Third Sector Research (ISTR) in Lisbon in July 2026.

Mark Sidel spoke on the role of philanthropy in addressing reductions in official development assistance in the U.S., the UK and elsewhere at the Workshop on the Future of International Development and the Rule of Law at University College London on July 3, 2026.