In 2000, the seventeenth Karmapa, Urgyen Trinley Dorje, who had been confirmed by the Dalai Lama and accepted as a tulku by the Chinese government, escaped from Tibet, seeking to return to the Rumtek Monastery in Sikkim. Chinese officials were in a quandary on this issue, as any protests to India would mean an explicit endorsement of India's governance of Sikkim, which China still recognised as an independent state occupied by India. The Chinese government eventually recognised Sikkim as an Indian state in 2003, on the condition that India officially recognise Tibet as a part of China; New Delhi had originally accepted Tibet as a part of China in 1953 during the government of Jawaharlal Nehru. The 2003 agreement led to a thaw in Sino-Indian relations, and on 6 July 2006, the Sikkimese Himalayan pass of Nathu La was opened to cross-border trade, becoming the first open border between India and China. The pass, which had previously been closed since the 1962 Sino-Indian War, was an offshoot of the ancient Silk Road.