The United States and Saudi Arabia have signed a nuclear agreement. The agreement will transfer uranium enrichment and spent fuel reprocessing technology to Saudi Arabia, although the United States denies that Saudi Arabia has the potential to develop nuclear weapons. However, concerns about a 'nuclear domino effect' are being raised in the international community. In particular, the agreement with Saudi Arabia is raising controversy over double standards, as the United States is demanding a solution to the nuclear issue with Iran. The United States will benefit economically through the sale of nuclear power plants, and Saudi Arabia can expect an increase in crude oil exports and a reduction in carbon emissions. However, it is also pointed out that this agreement could have a negative impact on the international nuclear non-proliferation regime.