The IISS Asia Security Summit: The Shangri-La Dialogue (SLD) is a "Track One" inter-governmental security conference held annually in Singapore by an independent think tank, the International Institute for Strategic Studies (IISS). The dialogue is commonly attended by defence ministers, permanent heads of ministries and military chiefs of mostly Asia-Pacific states. The forum's name is derived from the Shangri-La Hotel in Singapore, where it has been held since 2002.