Tuura, Heini
(Helsingin yliopisto, 2019)
This dissertation concerns armed intervention by invitation in international law. In its essence, intervention by invitation entails the use of force with the consent of the territorial State, which appears simple. However, the modern form of the concept is fraught with legal complexities, including its relationship with the United Nations Charter. The instrument, which should regulate the use of force and make it a collective matter, does not mention unilateral intervention by invitation, leaving its legal basis complicated. Still, this impasse has been bypassed, allowing the concept to exist despite its inherent contradictions.
The thesis examines the position of intervention by invitation in international law governed by the Charter: why the doctrine continues to exist as an international legal concept and how it has fared since 1945. Accordingly, the dissertation has been divided into three research topics: (1) the exact legal basis of intervention by invitation and how it is related to other uses of force, (2) the concept in practice, and (3) its current and future prospects. The thesis deploys the New Haven School approach to international law, thus adopting a policy-oriented perspective.
Upon examination, it is held that the concept is a result of decision-making processes which took place following the adoption of the Charter. These processes were pushed by the most powerful States, which endorsed invited interventions in the absence of collective security. Thus, the concept’s emergence is attributed to the failure to implement the scheme of the Charter wholly in the midst of the Cold War, which led to political developments that necessitated the return of invited interventions. Modern intervention by invitation hence exists due to changing circumstances and the State policies adopted in response, not the black letter of law itself. This is mirrored in the practice of the doctrine, which is erratic in many senses, and its current place in international law.
Despite this antagonistic character quality, intervention by invitation has also played a stabilising role during the UN era, as it has quietly served the common values of the global community. This was particularly the case during the Cold War, when the concept — while deepening the polarisation of relations — prevented the political crisis from reaching the point of no return. The doctrine has thus served a dual purpose, attending to both sovereign and common interests. This ambivalence is relevant, because the definitions between unilateral and collective measures, as well as internal and international matters, are becoming hazier. Such developments inevitably have an impact on intervention by invitation and the values it serves.
Of late, intervention by invitation has been invoked to promote global interests more expressly, which suggests that the concept is indeed transforming. However, this transformation may be hindered by the fact that unlike during the Cold War, when it kept the balance of terror in check, intervention by invitation currently has no wider purpose to serve. Finding such a purpose is of upmost importance, should the concept aspire to embody global and sovereign interests in a balanced manner.