The Minister of Petroleum and Mineral Resources Ali bin Ibrahim Al-Naimi met separately here today with the Ambassador of Switzerland Heinrich Schellenberg, the Ambassador of Germany Boris Ruge , and the Ambassador of New Zealand Hamish MacMaster accredited to the Kingdom of Saudi Arabia. During the meetings, they reviewed the importance of the international oil market stability, and the increase of joint investments in the sectors of oil and mining between the Kingdom and these countries. The meetings were attended by Advisor to the Minister of Petroleum and Mineral Resources Dr. Ibrahim bin Abdulaziz Al-Muhanna.