plateau. There were reports of the PLA troops threatening the Bhutanese guards, declaring it to be Chinese soil, and seizing and occupying Bhutanese posts for extended periods. Again, after 2000, numerous intrusions, grazing and road and infrastructure construction by the Chinese were reported as reported in the Bhutanese National Assembly. 2017 Doklam standoff In June 2017, Doka La became the site of a stand-off between the armed forces of India and China following an attempt by China to extend a road coming via Sinchela further southward on the Doklam plateau. India does not have a claim on Doklam but it supports Bhutan's claim on the territory. According to the Bhutanese government, China attempted to extend the road that previously terminated at Doka La towards the Bhutan Army camp at Zompelri two km to the south; that ridge, viewed as the border by China but as within Bhutan by both Bhutan and India, extends eastward overlooking India's strategic Siliguri corridor. On 18 June, Indian troops crossed into the territory in dispute between China and Bhutan in an attempt to prevent the road construction. India's entry into the dispute is explained by the extant relations between India and Bhutan. In a 1949 treaty, Bhutan agreed to let India guide its foreign policy and defence affairs, reminiscent of its protected state status during the British colonial rule. In 2007, that treaty was superseded by a new friendship treaty which allows freedom of foreign policy to Bhutan, but mandates cooperation in issues of national security interest. India has criticised China for "crossing the border" and attempting to construct a road (allegedly done "illegally"), while China has criticised India for entering its "territory". On 29 June 2017, Bhutan protested the Chinese construction of a road in the disputed territory. The Bhutanese border was put on high alert and border security was tightened as a result of the growing tensions. On the same day, China released a map depicting Doklam as part of China, claiming, via the map, that all territory up to Gipmochi belonged to China by the 1890 Anglo-Chinese treaty. On 3 July 2017, China told India that former Prime Minister of India Jawaharlal Nehru accepted the 1890 Britain-China treaty. Contrary to Chinese claim, Nehru's 26 September 1959 letter to Zhou, stated that the 1890 treaty defined only the northern part of the Sikkim–Tibet border and not the trijunction area. He called for discussion