Brussels, 07/04/2000 (Agence Europe) - The European Commissioner for Competition, Mario Monti should make announce a decision on Tuesday 11 April on the opening of the second phase of investigation of the merger between the British and German telecommunications giants Vodafone and Mannesmann. The operation was re-notified at the start of March on request for the European Commission who wanted to get additional information. World's largest in mobile telephony, Vodafone was already engaged in...