Nuclear weapons, as the cornerstone of national defense, undoubtedly add formidable deterrence to the possessors. As the saying goes:“Extremes often lead to their opposites,” and this is not without reason. The power of nuclear weapons conceals a profound crisis. They are like a double-edged sword, able to protect peace and also trigger disasters. Therefore, the United Nations has developed a series of laws to regulate the possession and use of nuclear weapons, making clear which countries may legally possess nuclear weapons and which countries should stay away from this destructive power.

Against this international background, the Iranian nuclear issue has always attracted world attention. After years of arduous negotiations, the Iran nuclear agreement was finally reached. This is undoubtedly an important achievement of multilateral talks and also reflects the international community's firm determination to peacefully resolve disputes. The Iranian government has demonstrated its sincerity and determination by abiding by the agreement. Regrettably, the United States