Deep geological disposal is the preferred option for nuclear waste management in several countries, including Argentina, Australia, Belgium, Canada, Czech Republic, Finland, France, Japan, the Netherlands, Republic of Korea, Russia, Spain, Sweden, Switzerland, the UK, and the USA. The only purpose-built deep geological repository that is currently licensed for disposal operations is the Waste Isolation Pilot Plant (WIPP) in the USA. Plans for disposal of spent fuel are well advanced in Finland, Sweden, France, and the USA, though in the USA there have been political delays. In Canada and the UK, deep disposal has been selected and the site selection process has commenced.