“Revolutionary governments must achieve effective control to establish legal validity internationally.”
Following Southern Rhodesia's Unilateral Declaration of Independence in 1965, Madzimbamuto was detained under emergency powers. His wife challenged the detention, arguing that the Smith regime lacked legal authority since the UK Parliament remained sovereign.
Whether the Southern Rhodesian government had legal authority to detain individuals after UDI, and what constitutes effective governmental control for legal recognition purposes.
The Privy Council held that the UK Parliament retained sovereignty and the Smith regime lacked legal authority. However, they acknowledged that effective control might eventually create legal facts.
This case explores the relationship between legal sovereignty and effective control in revolutionary situations. It remains important for understanding state recognition, the effectiveness principle in international law, and the limits of legal formalism.
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OSCOLA Citation
Madzimbamuto v Lardner-Burke [1969] 1 AC 645
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