U.S., allies use economic scare tactics in talks with Iran

VIENNA (Reuters) - Behind closed doors in a 19th-century Viennese palace, U.S. and European negotiators have tried to scare Iran with facts and figures showing that without a swift nuclear deal it will plunge further into economic ruin.

In conference rooms at the Palais Coburg, Western officials have repeatedly warned Iranian counterparts over the past six months that more economic pain is a risk for an OPEC member whose oil exports have already shrunk to a fraction of what they could have been, diplomats and Iranian officials told Reuters.