Twitter users get to step into the shoes of a Red Cross negotiator.
Ads are already available on sister Instagram Stories platform.
The 98-year-old Japanese trading giant plans to use its new investment vehicle to grow overseas and take advantage of changing media consumption at home.
Just over a year since it emerged that Dentsu systematically overcharged clients including Toyota for digital work, we ask a digital media auditor if anything has changed.
Daizo Nishitani will lead the conglomerate in its digital media ambitions.
Facebook has been criticised for allowing advertisers to discriminate between users in ad campaigns based on their "ethnic affinity".
Top news, insights and analysis every weekday
Sign up for Campaign Bulletins