India's relationship with Pakistan remained strained following the Shimla Accord in 1972. Gandhi's authorisation of the detonation of a nuclear device at Pokhran in 1974 was viewed by Pakistani leader Zulfikar Ali Bhutto as an attempt to intimidate Pakistan into accepting India's hegemony in the subcontinent. However, in May 1976, Gandhi and Bhutto both agreed to reopen diplomatic establishments and normalise relations. Following the rise to power of General Muhammad Zia-ul-Haq in Pakistan in 1978, India's relations with its neighbour reached a nadir. Gandhi accused General Zia of supporting Khalistani militants in Punjab. Military hostilities recommenced in 1984 following Gandhi's authorisation of Operation Meghdoot. India was victorious in the resulting Siachen conflict against Pakistan.