Saudi Arabia has missiles pointed at Israel, and it's nearer. If anything it is a greater theat.

The evidence about Iran proposing to make nuclear weapons is far from conclusive. It is basically evidence that if they wanted to develop such weapons they have the ability and resources to do so. So have a lot of other countries. Only a few have been so irresponsible and stupid as to do so, including the UK.

The only people in the area at present who have nuclear weapons are Pakistan and Israel. Getting rid of those should be the priority.