• 

  40%

  0.0%

  Procurement Drags On

  Iran keeps the S-400 request public as leverage, but Russia avoids a rapid, visible transfer that could trigger additional sanctions or Israeli action. Tehran continues demanding concrete U.S. sanctions relief before returning to talks, leaving diplomacy stalled but not collapsed.

• 

  25%

  −0.6%

  Russian Transfer Advances

  Russia agrees to deepen Iran’s air-defense capabilities, either through a formal S-400 arrangement or incremental delivery of key components. This would raise Israeli and U.S. concerns but still fall short of an immediate regional war trigger.

  Energy +1.0% · Industrials +0.3% · Finance −0.3%

• 

  20%

  +0.1%

  Talks Resume

  Washington offers a narrowly defined, reversible step such as humanitarian-channel relief, access to restricted funds, or limited oil-sale flexibility. Tehran uses the concession to justify indirect talks while keeping Russian defense ties as insurance.

  Energy −0.3% · Technology +0.3% · Finance +0.1%

• 

  15%

  −0.5%

  Disruption Campaign Expands

  Israel and the U.S. move to disrupt Iran’s air-defense procurement before any S-400 system becomes operational. The most likely tools are sanctions, cyber operations, sabotage, and interdiction rather than an immediate broad military campaign.

  Energy +1.6% · Technology −0.6% · Finance −0.6%

Each figure is the modeled move of the S&P 500 if it happens. For information only. Not investment advice.