This pretty much comes down to a race between Ahmedinajad's uranium enrichment and Israel missile defense shields. The Israeli technology needs to be aggressive enough that should anything be sensed as coming from Syrian or Hezbolla airspace, the system will IMMEDIATELY blow it up OVER their own airspace. This is crucial for a nuke warhead. Let the nuke warhead explode over THEIR airspace and not our's. This should send Ahmedinajad into anger tantrums.
More than 100,000 asylum seekers entered Germany in August, official says (Reuters)
from the article: Iron Dome missile defense system aces final test run