evidence: It resulted in both countries ceding over 1,942 square kilometres (750 sq mi)[clarification needed] to the other. Pakistan recognized Chinese sovereignty over land in Northern Areas of Kashmir and Ladakh.[4][5] However, Indian writers have insisted that in this transaction, Pakistan surrendered approximately 5,300 km2 (2,050 sq mi) of territory to China.[6][7] India claims the agreement is invalid, and claims sovereignty over part of the land. In addition to increasing tensions with India, the agreement shifted the balance of the Cold War by bringing Pakistan and China closer together while loosening ties between Pakistan and the United States. [...] The agreement resulted in China and Pakistan each withdrawing from about 1,900 square kilometres (750 square miles) of territory, and a boundary on the basis of the 1899 British Note to China as modified by Lord Curzon in 1905. Indian writers have insisted that in this transaction, Pakistan surrendered approximately 5,300 km2 (2,050 sq mi) of territory to China (to which they believe it had no right in the first place).[7] The claim given up by Pakistan was the area north of the Uprang Jilga River which also included the Raksam Plots where the Mir of Hunza had enjoyed taxing and grazing rights throughout much of the late 19th Century as part of agreements with Chinese authorities in Sinkiang. Despite this, sovereignty over area was never challenged by the Mir of Hunza, the British or the State of Jammu and Kashmir. [6]