Part 2/8:
One major complication is ambiguity. Iran could achieve the technical capability to produce nuclear weapons without triggering an immediate response if it operates in the shadows, meticulously avoiding crossing the established "red line" by delaying the final assembly of weaponized nuclear material.
The issue of uncertainty was also highlighted. How can the U.S. establish whether Iran has crossed a red line? Waiting for an actual nuclear test would be too late to intervene; thus, actions must be taken based on intelligence assessments, which inherently carry a degree of uncertainty and hesitation given the intelligence community's cautious approach.