This is not a trivial exercise by any means, but feasible enough that enrichment facilities present a significant nuclear proliferation risk.

In 2008, all six of these nations had enrichment facilities.

Now, he said, the Europeans have come around to the view that "the best guarantee is for them to permanently abandon their enrichment facilities."

In November 2010 it then revealed it had a modern, functioning uranium enrichment facility.

And when the North owns up to one enrichment facility, who is to say there aren't others hidden?

MI6 was aware that the Iranians were building a secret underground enrichment facility for "some months" and played a key role in identifying its use.

This involves the monitoring of lost nuclear material, as well as known or suspected enrichment facilities.

How about a precision bombing run on their enrichment facility?

We cannot help wondering why Iran wants its own enrichment facilities.

It is one of four Russian enrichment facilities.