U.S. special envoy to the Middle East: Iran nuclear enrichment is the red line

Nuclear Program Concerns - Enrichment is considered a critical threshold, described as the "red line" [1] - Weaponization is also a "red line" and is deemed unacceptable [1] Regional Stability - Weaponization is seen as a destabilizing factor for the entire region [1] - The concern is that weaponization could trigger a nuclear arms race in the region [1]