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The settled digest of legal linchpins as regards the whole letter of the UN CHARTER has remained that Article 2(4) and Article 51 is most significant most probably because of its sorely attribute and distinct discourse. Before attempting an inward look at anticipatory self-defence, the sojourn to the exegesis of the umbrella word, “self-defence” becomes necessary. Self-defence under the charter supra was captured in Article 51. It had in black prints that “nothing in this present charter shall impair the inherent right of self-defence or collective self-defence if an armed attack occurs against a member of the United Nations…” This is clearly a break away from Article 2(4) of the charter which preaches abstinence from threats or use of force. What can be said therefore is that where peaceful settlement cannot be met vide Article 2(3)UN CHARTER, then use of force within the roof of self-defence becomes apropos – hence no inconsistency as long as the eventual attack knows proportionality and necessity vis-à-vis initial armed attack. It becomes a situation where retaliation is fuelled from threats. Why it is a situation is due to the supposed wilful omission of the word “threats” or its imminence in Article 51 UN CHARTER which had for “armed attack” and no more. It is on this score that we look at the legality of pre-emptive strikes as a constituent of self-defence in International law.

It may be gleaned upon close surveillance at the entire charter that only armed attack can activate the self-defence resort. The upholders of this view have argued that until the charter lives to know an amendment, it remains unlawful to share in the communion of pre-emptive strikes. The view is anchored on the premise that since the charter allows for reliance on grounds of an existing armed attack, any other justification is just political and in La La land as far as the definition of self-defence is concerned. But will it be argued in this same light when the lawfulness is drawn from state practice or from rationale the justices can so patter down? The case of US. V. NICARAGUA is worthy of mention here because it is in this case one can best appreciate that despite arguments from agents of Nicaragua that their sovereignty was disregarded by the militia of United States, it became the way of the Justices that United states can so enter the territory of Nicaragua to possess the nuclear weapons if indeed the act was done in the interest of the world. The crux of this is to show that lawfulness of an action rests in the judgement of the courts as much as it rests on the convention that sets up the lawful act or otherwise. This takes us to the 1837 Caroline case if anticipatory self-defence is to be given a smidgen of a justification in the clothing of legality.

Scholars who support the right to anticipatory self-defence trace the existence of the right from the Caroline incidence between Britain and the United States. The facts have that during the first part of the nineteenth century, an anti-British insurrection was taking place in Canada which at that time, was under the British rule. Canadian rebels were using U.S. territory as staging ground from which to attack British forces in Canada. The rebels used a steamer called Caroline, owned by US nationals, to transport themselves from the U.S. side of the Niagara River to the Canadian side. Meanwhile the United States and Great Britain were at peace. On the night of December 29, 1837, while the ship was moored on the US side of the Niagara River, British troops crossed the river, boarded the ship, killed several US nationals, set the ship on fire and set the vessel over Niagara Falls. This prompted a strong objection from the United States and a series of diplomatic exchanges setting forth each State’s position. In one of the exchanges, Daniel Webster, the American Secretary of State, sent a note of protest to the British government and warned that the incident would result in a demand for redress. In response, the British Government claimed that they were acting in self-defence as well as argued that their action was necessitated by the fact that the ordinary laws of United States were not being enforced at the time, and that the laws were, in fact, overtly overborne by the rebels. In further correspondences, Webster postulated that Britain’s action would be justified if it could justify that there was a necessity for self-defence, instant, overwhelming, leaving no choice of means, and no moment for deliberation. It will be for it to show, also, that the local authorities of Canada – even supposing the necessity of the moment authorized them to enter the territories of the United States et al – did nothing unreasonable or excessive; since the act justified by the necessity of self-defence, must be limited by the necessity and kept clearly within it. Though pleading, in effect, anticipatory self-defence, the British government apologized and the dispute ended.

The long and short of the fact supra is that despite the express provision of Article 51 of the charter which has for armed attack, the Caroline’s case suggests that there is a good ground for self-defence in the event that an armed attack is launched, or is immediately threatened, against a state’s territory. The rationale behind this is that there are prevailing circumstances where a state is put under imminent threat of a devastating armed attack thus the way out being to act pre-emptively albeit within the templates of reasonableness. It may be argued that how can one determine proportionality and necessity when the armed attack is yet launched? To this, it should be underscored that the state that has resorted to anticipatory self-defence should only engage in such pre-emptive strikes when it is crystal that other means of dispute settlement will prove abortive; as regards proportionality, it is not expected that such a state blow up lives and properties of citizens of the state suspected to have so threatened. It is in fact nonplussing if the threatened state chooses undue impulse as necessary cause of action and opts to quell their fear of danger by destroying the entire race – this never accounts for reasonableness and is in fact, punishment-worthy. Oppenheim must thus be agreed with when he mentions that “while anticipatory action in self-defence is normally unlawful, it is not necessarily unlawful in all circumstances, the matter being dependent on the facts of the situation including in particular the seriousness of the threat and the degree to which pre-emptive action is really necessary and is the only way of avoiding that serious threat; the requirements of necessity and proportionality are probably even more pressing in relation to anticipatory self-defence than they are in other circumstances.” This answers the question concerning the role of the necessity and proportionality test in the place of anticipatory action in self-defence – it is of higher onus to show the court the proportionality of an armed attack to an imminent threat. The legality therefore being one yet covered by the charter itself is drawn from the precept of international law that an act remains lawful where a viable justification is on the table; even, the legality of such pre-emptive strikes is evinced from all muscles of reasonableness as one does not expect a state under the imminent threat of a mind-blowing armed attack before it, fails to quell it with the use of force if such force is the only option available that peace might so reign and citizens, protected.

The gospel remains that the international community recognizes the respect for every state’s territory and so any armed attack on any state is presumed an abuse or a breach of international precepts vide the corfu channel’s case (UK. V. ALBANIA). This presumption is a rebuttable one upon the existence of justification that can so fly. The point never subject to moot is that it is always a tiring and strenuous process to convince the court why one engaged another state with pre-emptive strikes because if the justification is not water tight, the state using such mode of self-defence will not escape liability. Be that as it may, even with the diverse state practice as regards anticipatory self-defence, the modern international law has its whole essence to be to preserve the sanctity of state and its people. It will thus be difficult to see how a state can validly be denied the right to defend itself in an extreme case of threat of force that puts the very survival of the state in jeopardy. This paper avers that the charter indeed excludes threat of force, however, it needs be circumvented that the mere fact that threat of force was not included in the same line as armed attack vide Article 51, does not go to bring it to state of illegality as far as international law is concerned. It can even be queried on this light that cyber-attacks is not in its strict sense within the veranda of armed attack and as such a state should not raise its claws when attacked via the internet and yet call it self-defence. Since that must be flawed for want of reasonableness, it suggests then that if such cyberattacks can be placed well within the intent of Article 51, then it is safe to say that the word armed attack has a general meaning and as such, the intent of the drafters could not have been to oust a threatened state the power to bite where the perceived danger is overwhelming and capable of quenching the state’s existence. The ratio in Caroline’s case accords with common sense and fairness as anything short of this reasoning is the assemblage of an iniquitous inequity. The only adjuration should be that many states may so abuse this lawful act and go about striking enemy states for no just cause yet claiming anticipatory self-defence. It is because of the demerits that there is no unanimity in diverse states as far as this point of law is concerned; it is because of this demerit that it be agreed with Oppenheim that the test of proportionality and necessity be given a higher degree due to the uniqueness of the situation and circumstances behind its usage.
The use of pre-emptive strikes is therefore lawful as a matter of law. Its exclusion from Article 51 does not mean its exclusion from modern international tablets. The position of the law remains that an act becomes unlawful upon looking at the existing circumstances of the case. An anticipatory action in self-defence becomes an illegal act where the armed attack does not pass the necessity test. The justification behind the action is what the Justices of the International Court looks at since a high regard is usually placed on every state’s territory – a violation which arouses a comeuppance.



My name is Okocha Obed, you can call me Obeezy. I love to display aesthetics through my ink—I must say writing is my small world. I consider myself a deep writer; I say I am deep because I have discovered that part about myself, even, my fabulous audience share same view. I believe in connecting to all kind of persons as there is always something to learn from everyone. I see myself as an actor; to stay on the stage, I need to think ink. The voice is a reflection of myself and my conscience. I always felt I could be like superman while growing up. It was pretty ridiculous so all I did was dream of being a soldier. It was abortive. So I created a world where I could keep talking about the ills in my community but with other flavours to show I am growing into completeness. keep reading.


  1. This is one beautiful expose on the principle of self defense. Your reasoning is sound and beautiful, your flow is like a flowing stream easy to scoop from. God bless your ink Bro.

    Liked by 1 person

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