Euro exit talk risks self-fulfilling prophecy  PARIS Mon Jul 23,
2012 9:48am BST  A woman walks past Greek and German national
flags outside a Greek cafe in Berlin, June 22, 2012.
REUTERS/Thomas Peter   Credit: Reuters/Thomas Peter  Related
Topics  PARIS (Reuters) - To understand the impact of a
potential Greek exit from the euro zone, imagine an operating
theatre inside a betting shop.     Other policymakers and market
participants fear that pushing Greece towards the exit would
start a chain reaction, materialising huge costs for investors
and taxpayers and perhaps triggering a break-up of the euro.
German Chancellor Angela Merkel, Europe's most powerful
political leader, has appeared to be on both sides of the
argument at different times.  She said last November that
ensuring the stability of the euro was a bigger priority than
guaranteeing Greece's continued membership. But she has also
said a Greek exit would cause a disastrous "domino effect",
scaring investors away from Europe.  The election last mont