UN chief rejects U.S. conditions on billions in back dues, declaring payments “non-negotiable” U.N. Secretary-General Antonio Guterres declared that billions in U.S. assessed contributions are legally binding and cannot be tied to reform conditions. Washington reportedly circulated diplomatic notes demanding nine “quick-hit” reforms, including cost-cutting measures and limits on Chinese influence. Proposed U.S. conditions include pension system overhaul, travel restrictions, senior staff cuts, and blocking China from discretionary funds. Guterres acknowledged ongoing reform efforts but insisted funding obligations and structural changes must remain separate issues. U.N. faces severe financial strain, with the United States having paid only $160 million of…