Does anyone want nuclear weapons?

Iran's President Mahmoud Ahmadinejad

Many countries, including Britain, are worried Iran wants nuclear weapons.

Iran says it doesn't and the Iranian President has said: "We do not need a bomb".

Iran does want nuclear power stations though, and it is enriching uranium so it can get them.

The United Nations Security Council has imposed sanctions on Iran to try to make Iran stop enriching uranium. The sanctions means some things can't be sold to Iran.