Kahan: Nuclear weapons do not prevent war, but if Iran had such a weapon, its leader would not be attacked and assassinated. Kahan newspaper wrote: The experience of wars shows that the possession of nuclear weapons does not prevent conventional conflicts. The nuclear weapons owners have each set a final target for the use of nuclear weapons and in some cases have been approved by parliament. Exposure to the danger of survival and maintaining territorial sovereignty is one of their common characteristics, which can prevent the expansion of the scope of the war, although in the war between Ukraine and Russia, it prevented the direct entry of NATO and Western armies into the war. In the tensions between India and Pakistan, the possibility that both sides would use nuclear weapons was a deterrent to North Korea, it almost prevented the direct invasion of America as a deterrent if the Islamic Republic of Iran had nuclear weapons, its leader would not be attacked and assassinated like that. Since retaliatory action is a recognized right in international law; Changing the nuclear doctrine and consequently promoting deterrence can prevent the risk to the Islamic system and the territorial sovereignty of the country.