sentences:  Matlock drew the ire of many Republicans during the 2004 presidential election campaign when he signed the Official Statement of Diplomats and Military Commanders for Change, which criticized the policies of President George W. Bush and endorsed Senator John Kerry for president.On Jan 4, 2007, Matlock joined with George Shultz, William Perry, Henry Kissinger and Sam Nunn to advocate a goal of a world free of nuclear weapons.On 23 September 2008 after a two-day conference at the Carnegie Endowment for International Peace, he joined several other former ambassadors to issue a joint statement on how Russia and the United States might move forward in their relations.