sentences:  Relations between the Dutch and the Kandyans had been difficult from the onset and the alliance fell apart in the 1640s.The two sides joined forces again in the 1650s to expel the Portuguese, but a final break occurred in 1656 in the aftermath of the fall of Colombo after a six-month siege and the final expulsion of the Portuguese from Sri Lanka.Rajasinha demanded that the fort be handed over to the Kandyans for demolition; in November, the Dutch refused and drove the king and his army from the vicinity.