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Galdan Tseren was the eldest son of Tsewang Rabtan. After the assassination of his father by rival factions, a civil war followed between his sons of which Galdan Tseren emerged victorious and crowned himself the new Dzungar Khan. Galdan Tseren continued his fathers policies of confrontation with the Qing dynasty. He refused to surrender Lubsan Danjin, the leader of the revolt of the Kokonor (Qinghai) Khoshuts of 1723, and he initiated a policy of harassment of the Khalkha Mongols, the Manchu's allies.