A dispute will only fall within the jurisdiction of the International Centre for Settlement of Investment Disputes (ICSID) if it directly arises out of an ‘investment’, as is provided by Article 25(1) of the Convention for the Settlement of Investment Disputes between States and Nationals of Other States (ICSID Convention). However, not only does the ICSID Convention fail to provide any definition of what constitutes an ‘investment’, the drafters of the ICSID Convention, in fact, made an express decision not to include such a definition. This absence has given rise to interesting issues of interpretation as ICSID tribunals have sought to arrive at an understanding of how the term ‘investment’ should be properly understood for the purposes of the ICSID Convention.