Have you considered that maybe the reason Iran hasn't developed nuclear weapons in those 30 years, might be due to the actions and threats of the IAEA, the UN and the rest of the world (basically the west and Israel)?
However, I'm on the side that dropping bombs on Iran, both by Israel and the USA (supported by most of western Europe and Australia) was not the right thing to do, just as Russia attacking Ukraine was wrong. You can't just drop bombs on foreign nations because of what you fear might happen in the future. I'm sure the Chinese Communist party are hoping that the west does go to war with Iran, as it means less attention on China's machinations to gain control of the world's shipping lanes.