The Quadrilateral Security Dialogue (QSD, also known as the Quad or QUAD) is a strategic dialogue between the United States, India, Japan and Australia that is maintained by talks between member countries. The dialogue was initiated in 2007 by Japanese Prime Minister Shinzo Abe, with the support of U.S. Vice President Dick Cheney, Australian Prime Minister John Howard, and Indian Prime Minister Manmohan Singh. The dialogue was paralleled by joint military exercises of an unprecedented scale, titled Exercise Malabar. The diplomatic and military arrangement was widely viewed as a response to increased Chinese economic and military power. The Chinese government responded to the Quadrilateral dialogue by issuing formal diplomatic protests to its members.