铀浓缩上限 — 伊朗和谈追踪

伊朗和谈追踪的议题专页：浓缩上限选项、核查口径，并链到核突破情景计算器。

Uranium enrichment ceiling

This issue brief summarizes the core enrichment ceiling dispute: the maximum enrichment level, verification expectations, and cross-links to the Nuclear Breakout scenario calculator. It is a reader guide based on open reporting and editorial labels, not treaty text or policy advice.