Russia and China veto U.S. proposal for U.N. experts to keep monitoring sanctions on Iran

# Why This Matters The Russian and Chinese veto represents a critical breakdown in the international system designed to enforce nuclear non-proliferation, leaving Iran's compliance with sanctions virtually unchecked. Without expert monitors, the U.N. lacks reliable intelligence on Iranian nuclear activities and sanctions evasion, making it significantly easier for Tehran to advance its weapons program while maintaining diplomatic cover. This move also signals deepening alignment between Moscow and Beijing against Western security interests—particularly important as Russia seeks Iranian support for its Ukraine campaign and both nations view constraining U.S. influence as more important than preventing nuclear proliferation. The immediate consequence is that Iran gains operational space to accelerate uranium enrichment and weapons development with reduced risk of early detection, fundamentally weakening the negotiating leverage that the international community once held over its nuclear ambitions.