EU talks with Iran are a national insult.

This is the text of EU foreign policy chief Catherine Ashton's letter to Iran, inviting Iran to talks with the EU. Note that while it demands that Iran impose no "preconditions" on the talks, it hides its own demands and preconditions in diplomatic language:

In order to start such a process, our initial objective is to engage in a confidence building exercise aimed at facilitating a constructive dialogue on the basis of reciprocity and a step-by-step approach. In this regard, we remain committed to the practical and specific suggestions which we have put forward in the past…involving full implementation by Iran of UNSC and IAEA Board of Governor’s resolutions

In other words, Iran has to give up enrichment, initially and as a "confidence building measure", before there can be negotiations about the enrichment program.

Frankly, his letter amounts to a national insult.

And that's why I agree with B at MoonofAlabama that the talks are actually intended to fail. The goal of setting such preconditions is to blame the failure of the talks on Iran's "intransigence".