Former J&K chief minister Farooq Abdullah has termed China as the "biggest threat" to India and cited movement of Chinese nuclear submarines near the country, captured by satellite cameras, as "indicative of the threat"."China is the biggest threat to India and we should be very careful about that country. India's leadership should not ignore China from the security point of view," Abdullah, who is also leader of the National Conference (NC), said at an interactive session in Jammu on Friday evening.China's "threat" is also evident from its claim over Arunachal Pradesh, he said and expressed concern over the recent incidents in Tibet.When China annexed Tibet, the then Government headed by Jawaharlal Nehru, had "maintained silence" over the issue, and as a result of which Tibet, "a buffer zone, was forcibly occupied by China", he claimed during the session organised by the J&K Forum for Peace and Reconciliation on the theme Various Concern of J&K State in the Emerging Scenario in South Asia.He also criticised China's policies, which strike down India's proposal to allow tourists and pilgrims to visit Mansarovar on SAARC, Abdullah said India can play a major role in strengthening the organisation on lines of the European Union, which would help in boosting the economy of the south Asian region.