Are nuclear weapons really that powerful? Does it exist in every country? Is there one in China? Why is it that Iraq's research on nuclear weapons will be attacked by the United States?

Nuclear weapons are weapons of mass destruction, which are powerful and can cause long-term nuclear pollution. At present, only a few countries in the world possess nuclear weapons, led by the United States and Russia, while others are China, Britain, France, Israel, India and Pakistan. The United States attacked Iraq and Afghanistan because it needed to control the Middle East.

There is a joke: Iraq asked the United States: Why did you hit us? The United States said: Suspect that you have weapons of mass destruction. Me: Then Russia also has it! Why not? America: Because he has!