Namibia; 6. Calls upon all States to en.aure that companies and other commercial enterprises owned by, or under direct control of, the State cease all further investment activities, Including conce11ion1 in Namibia; 1 /hid., document S/9863. 3 7. Calu upun all States to discourage their nati~nals or companit;S o{ their nationality not under direct government.al controi from investing or obtain~g con­ ceHiona :n Namibia, and to this end to w1thho]d protection of sl.ch investment against cl.aims of a future lawful government of Namibia; 8. Request.s all States to undertake without delay a detailed study and review of all bilateral treaties between themselves and South Africa in so far as these treaties contain provisions by which they apply to the Territory of Namibia; 9. Requests the Secretary-General to undertake without delay a detailed study and review of all multi­ lateral treaties to which South Africa is a party and which, either by direct reference or on the basis of relevant provisions of international law, might be considered to apply to the Territory of Namibia; 10. Requests the United Nations Council for Nami­ bia to make available to the Security Council the results of its study and proposals with regard to the issuance of passports and visas for Namibians, and to undertake a study and make proposals with regard to special passport and visa regulations to be adopted by States concerning travel of their citizens to Namibia; 11. Cal/3 upon all States to discourage the promo­ tion of tourism and emigration to Namibia; 12. Requests the General Assembly, at its twenty­ fifth session, to set up a United Nations fund for Namibia to provide assistance to Namibians who have suffered from persecution and to finance a comprehen­ sive educational and training programme for Namibians, with particular regard to their future administrative 