## Facts

- South Africa administered Namibia (then South West Africa) under a League of Nations Mandate and later imposed apartheid policies in the territory.
- After the League of Nations ended, the United Nations treated itself as successor to the League’s supervisory role over the Mandate system, while South Africa rejected UN supervision and continued governing the territory.
- In 1966, the UN General Assembly adopted Resolution 2145 (XXI), declaring that South Africa had committed serious breaches of the Mandate and that the Mandate was terminated; the Assembly stated South Africa had no right to continue administering the territory.
- South Africa did not withdraw and continued to exercise authority in Namibia.
- The UN Security Council reaffirmed the UN position and, in Resolution 276 (1970), declared South Africa’s continued presence in Namibia illegal and stated that acts taken by South Africa on behalf of or concerning Namibia after the Mandate’s termination were illegal and invalid; it called on states to refrain from dealings inconsistent with that determination.
- By Resolution 284 (1970), the Security Council requested an advisory opinion from the International Court of Justice asking: “What are the legal consequences for States of the continued presence of South Africa in Namibia, notwithstanding Security Council resolution 276 (1970)?”
- In the advisory proceedings, written and oral statements were submitted by the UN Secretary-General and a number of states; South Africa raised objections to the Court’s handling of the request and to the participation of certain judges based on their prior roles in UN organs that had addressed Namibia.
- The Court rejected the objections and proceeded to answer the Security Council’s question in its advisory opinion of 21 June 1971.

## Issues

1. Did the ICJ have authority to give the requested advisory opinion, and was there any reason of judicial propriety to refuse to answer?
2. Was South Africa’s continued presence and administration in Namibia illegal after the General Assembly’s termination of the Mandate and the Security Council’s actions?
3. What legal consequences followed for states, including UN member states and non-member states, from South Africa’s continued presence notwithstanding Security Council Resolution 276 (1970)?

## Decision

- The Court concluded it had authority to respond to the Security Council’s request and found no sufficient reason to decline to give an advisory opinion.
- The Court stated that South Africa’s continued presence in Namibia was illegal and that South Africa was obligated to withdraw its administration immediately and end its occupation of the territory.
- The Court stated that UN member states were obligated to recognize the illegality of South Africa’s presence and the invalidity of its acts on behalf of or concerning Namibia after the Mandate’s termination.
- The Court stated that UN member states must refrain from acts—especially dealings with South Africa—that would imply recognition of the legality of South Africa’s presence or that would provide support or assistance for that presence and administration.
- The Court stated that states not members of the United Nations were expected to give assistance, within the same framework of non-recognition and non-assistance, to the action taken by the United Nations regarding Namibia.
- The Court indicated that the duty of non-recognition should not be applied so as to harm the people of Namibia in ordinary civil life, allowing limited practical acceptance of certain day-to-day acts affecting private rights.

## Legal Principles

- The ICJ may give an advisory opinion when a UN organ authorized by the UN Charter requests it on a legal question, even if the request arises from a politically disputed situation.
- A mandate under the League of Nations created international obligations; persistent and serious breaches by the Mandatory Power could justify termination by the UN General Assembly acting in the supervisory role taken over from the League’s system.
- Security Council decisions can create legal obligations for UN member states under the UN Charter, including duties to act consistently with the Council’s determination that a situation is illegal.
- Where a state maintains an illegal presence in a territory, other states have duties of non-recognition and non-assistance: they must not treat the situation or official acts maintaining it as lawful and must avoid conduct that would support the illegal situation.
- The duty of non-recognition is subject to a practical limit for measures affecting private rights and civil status, so that the protected population is not deprived of basic civil arrangements.

## Conclusion

In its Advisory Opinion on Namibia, the ICJ advised that South Africa’s post-termination administration of Namibia was illegal and had to end, and that states—especially UN members—had legal duties to treat South Africa’s Namibia-related acts as invalid, to avoid recognition or dealings implying legality, and to refrain from support or assistance, while allowing limited practical acceptance of ordinary civil acts to protect private life in the territory.


Advisory Opinion on Namibia, 1971 I.C.J. 16 (1971)