The Strategic Impact of the S-300 in Iran
The deployment of S-300 components to Iran is a strategic game changer in the Middle East, giving Iran a significant strategic advantage against regional states and significantly complicating US air operations.
The S-300 is the most advanced surface-to-air missile system available for export to potential enemies of the United States.
The US military can defeat the S-300, but only by devoting significant numbers of assets.
Deployment of the S-300 in Iran means the US will need to recalibrate its current mix of airframes in the Middle East.
Once Iran gains proficiency with the S-300, Russia may try to use the threat of exporting the S-400 to Iran as leverage against the United States.