evidence: Bhutan-China relations refer to the international relationship between the Kingdom of Bhutan and the People's Republic of China. As of present, Bhutan and China do not share an official diplomatic relationship with one another.[1] [...] Bhutan's border with Tibet has never been officially demarcated. The territorial claim was maintained by the People's Republic of China after the Chinese Communist Party took control of mainland China in the Chinese Civil War.[citation needed] With the increase in soldiers on the Chinese side of the Sino-Bhutanese border after the 17-point agreement between the Tibetan government and the central government of the PRC, Bhutan withdrew its representative from Lhasa.[9][10][11][verification needed] [...] Boundary issues [edit]With the entry of the People's Liberation Army into Tibet, some Tibetan settlements in western Tibet, formerly controlled by the Bhutanese government, came under the control of the People's Republic of China. While some sources believe that the Bhutan-China border was settled in a secret agreement during 1961, neither country has ever publicly acknowledged such an agreement.[18] In the 1980s, Bhutan relinquished its claim to a 154-square-mile area called Kula Khari on its northern border with China.[7] In 1998, the two countries signed a peace and tranquility agreement, although border disputes remain.[18] A 2002 official statement by the King of Bhutan to the National Assembly, specifies that there are still four disputed areas between Bhutan and China.[19]