They are now obsolete and Israel shouldn't really fear them since they will no doubt have countermeasures for them now. Iran would not be receiving these otherwise. They are now also trying to get the S400 system which s something to fear. But let's be honest, even if Iran got this system it is still a defensive weapon against unwanted intruders.
Magnitude 4.2 quake strikes near Grand Coulee Dam in Washington (Reuters)
from the article: Iran official: We have obtained the S-300 missile system