The frontier between Ladakh and Tibet can be traced back to the tenth century when a Tibetan prince, Skyid-Ida-Ngeemagon, conferred the Meryal (Ladakh) fief to his eldest son. In 1681 and 1683, the Tibetans, aided by Mongols, invaded Ladakh. In 1684, a peace treaty between the two sides was concluded that read: ‘The boundaries fixed in the beginning, when Skyid-Ida-Ngeemagon gave a kingdom to each of his three sons, should still be maintained.’
