The Stop Funding Global Terrorists Act of 2025 restricts U.S. funding to the United Nations for Afghanistan assistance unless the Secretary of State certifies that no U.S. funds are used for cash shipments by the United Nations into Afghanistan, and that no specially designated global terrorist organizations or foreign terrorist organizations receive funds from these shipments. The Secretary can revoke this certification if found inaccurate, with notification to relevant congressional committees. The bill defines key terms like "foreign terrorist organization" and "specially designated global terrorist organization" to ensure clarity in its application.