(Above was me)


"In nuclear strategy, a first strike is a preemptive surprise attack employing overwhelming force. First strike capability is a country's ability to defeat another nuclear power by destroying its arsenal to the point where the attacking country can survive the weakened retaliation while the opposing side is left unable to continue war. The preferred methodology is to attack the opponent's launch facilities and storage depots first. The strategy is called counterforce.



Read this carefully:

"to the point where the attacking country can survive the weakened retaliation while the opposing side is left unable to continue war."

EVEN if Israel WERE to eliminate the Iranian nuclear capability, you cannot show that

1. Israel would be able to survive the retaliation
2. Iran would be unable to continue the war


Thus Israel does not have a first-strike capability,