Warner Bros. Discovery International (formerly Turner Broadcasting System International and WarnerMedia International) is the international unit of Warner Bros. Discovery Global Linear Networks led by President Gerhard Zeiler. The unit oversees the production, broadcasting and promotion of its key brands outside of the United States. These brands include Adult Swim, Animal Planet, Boomerang, Cartoon Network, Discovery Channel, HBO, TLC, TBS, TNT, and Warner TV. The networks' headquarters are located in London. Other international offices are located in São Paulo, Santiago, Mexico City, Amsterdam, Warsaw, Milan, Mumbai, Paris, Singapore, Bogotá, and Auckland amongst others.