Euro RSCG Worldwide is one of the largest integrated marketing communications agencies in the world, made up of 233 offices located in 75 countries throughout Europe, North America, Latin America, Asia Pacific and the Middle East. Euro RSCG provides advertising, marketing services, corporate communications, and interactive solutions to global, regional, and local clients.

In 2010, Advertising Age listed Euro RSCG Worldwide as having more global assignments than any other network for the fifth consecutive year, making the agency the world's largest network by global accounts. Headquartered in New York, Euro RSCG Worldwide is the largest unit of Havas (Euronext Paris SA: HAV.PA), the fifth largest communications group in the world, behind Omnicom, WPP, Interpublic, and Publicis.

Source: Wikipedia