This article proposes that, based on the evolution of international investment law and investment arbitration, umbrella clauses are substantially implicated in the interpretation of Chinese concession loan agreements in Nigeria. So far, the outcome of the oversight functions of the National Assembly of Nigeria indicates that umbrella clauses have not been considered a significant legal issue in the negotiation of these agreements. With the growing use of Chinese concession loan agreements in Nigeria, this article offers a historical analysis that should be a guide to organs of government, policy advisers and others charged with the sourcing and negotiation of concession loans for development projects in Nigeria. The article makes the case that a proper understanding of the evolution of umbrella clauses is germane to the negotiation and interpretation of these agreements, compared to standard immunity clauses that appear to have overtaken in the debate about these loans in Nigeria.
