Three global public relations firms merging

Three international public relations firms said on Tuesday they're merging. Finsbury of Great Britain, The Glover Park Group of the United States, and Hering Schuppener of Germany said they're creating a new global firm that will have 700 employees around the world, with about 150 at a New York City headquarters. The combined company — Finsbury Glover Hering — is expected to formally launch early next year. All three companies have ties to British-based advertising agency WPP. WPP owns all…