INSIGHT-Push for tax-avoidance curbs in G-20 threatens Publicis-Omnicom deal
April 24, 2014 at 19:33 PM EDT
LONDON, April 25 (Reuters) - International pressure to curb corporate tax avoidance is behind delays to a $35 billion merger of French advertising group Publicis and U.S. rival Omnicom, and could even scupper the deal, tax advisers and sources close to the deal said.