Havas Worldwide, formerly known as Euro RSCG, is an American advertising agency. It is one of the largest integrated marketing communications agencies in the world, made up of 316 offices located in 75 countries. The firm provides advertising, marketing, and corporate communications services. In 2010, Advertising Age listed the firm, (then called Euro RSCG), as having more global assignments than any other network for the fifth consecutive year, making the agency the worlds largest network by global accounts. Headquartered in New York, Havas 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. In 1970 Bernard Roux and Jacques Séguéla established an agency called Roux Séguéla. In 1972, Alain Cayzac joined Roux Séguéla, and the company became Roux Séguéla Cayzac.