Prince Khalid bin Sultan bin Abdulaziz, Assistant Minister of Defense and Aviation for Military Affairs, who is also Chairman of Board of Prince Sultan bin Abdulaziz International Award for Water left here today after a three-day visit at the invitation of Netherlands" Heir Apparent Prince Willem Alexander. At Rotterdam Airport, he was seen off by Saudi Ambassador to Netherlands Abdullah bin Abdulaziz Al-Shaghroud, Netherlands" Ambassador to Kingdom of Saudi Arabia Ron Strikker and a number of officials.