Bhutanese forces assaulted the Achok tribe of the Monpa people, who live in the far south-east of Tibet and present-day Arunachal Pradesh.
Tibetan and Mongol troops defeated the adversary in a bloody campaign, regained the lost territories and forced the Bhutanese out of Sikkim.
[6] The troops fought their way past the mountain passes of West Tibet and were able to besiege the Ladakhi ruler Deleg Namgyal in his fortified capital Basgo.
The Dzungar Khanate evolved as a major Inner Asian power in this era; its royal family was descended from one of the main allies of Güshi Khan and there were many marital ties between them and the Khoshut elite.
Thus a daughter of Tenzin Dalai Khan, Kunga Rabten, married the Dzungar khong tayiji Tsewang Rabtan who later played a fateful role in the history of Tibet.
By the end of the 17th century, two descendants of Güshi Khan called Lobsang Tenzin and Erdeni Jinong dominated Amdo and did not conform to the main ruling line.
The desi Sangye Gyatso tried to mediate via envoys, but there were bloody disputes among the Khoshut elite at this time, and the meeting was not successful.