In 1947-8 India and Pakistan fought their first war over Jammu and Kashmir. Under United Nations’ supervision, they agreed to a ceasefire along a line which left one-third of the state – comprising what Pakistan calls Azad Jammu and Kashmir, and the Northern Areas administered by Pakistan and two-thirds, Jammu, Ladakh and the Kashmir Valley, administered by India.
http://news.bbc.co.uk/2/shared/spl/hi/south_asia/03/kashmir_future/html

