Dentsu and Microsoft Advertising urge brands to communicate sustainability measures.
New CEO to back flagship brands in turnaround.
Former WPP chief seeks to justify retaining his shares in ad giant.
'The pace of substantive change has been too slow', agencies told.
The chief executive of Publicis Groupe has experienced his first bad financial quarter since he took charge last June, as a drop in organic growth led its shares down 9%
The World Federation of Advertisers has shortlisted six CMOs to compete for its inaugural Global Marketer of the Year award.
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