1956-1959: On 30 October 1956, the state Constituent Assembly adopts a constitution for the
state declaring it an integral part of the Indian Union. On 24 January 1957, UN passes another resolution
stating that such actions would not constitute a final disposition of the State. India's Home Minister, Pandit Govind Ballabh Pant, during his visit to Srinagar, declares that the State of Jammu and Kashmir is an integral part of India and there can be no question of a plebiscite to determine its status afresh.
In April 1959, permit system for entry to the State is abolished; In October, the State Constition is amended to extend jurisdiction of Union Election Commission to the State and bring its High Court at par with those in the rest of India.
1962: China attacks India on account of a border dispute with India in the Ladakh region; At the end of war, China occupies 37,555 sq. kms from Indian held Kashmir at Aksai-chin and Demochok in Ladakh. In December, 5180 sq. kms are conditionally taken over by China at Shaksgam in Northern Areas of Kashmir under Pakistan control.
1963-1964: On 27 December, mass upsurge occurs in Kashmir Valley when the holy relic is found missing from the Hazratbal Shrine; the lost relic is recovered on 4 Jan 1964.
Sheikh Abdullah is released in April 1964; The ailing Prime Minister Nehru sends Abdullah to Pakistan on 25 May, in an effort to resolve the Kashmir problem, taking into account the wishes of Kashmiris; Nehru passes away on 27 May and the talks get stranded.
Protest demonstrations occur in Kashmir Valley and Pakistan held parts of the State in December against
Articles 356 and 357 of the Indian Constitution being extended to the state, by virtue of which the Centre can assume the government of the State and exercise its legislative powers.
The special status accorded to the State under Article 370, continues to
get eroded over years.
Balraj Puri, Kashmir: Towards Insurgency, New Delhi 1993, p.31