This paper looks at restrictions of passage, accidents and oil transportation norms as causes of interruption in oil supplies. The key ‘chokepoints' are discussed in detail: the Straits of Hormuz, Malacca, Bab el-Mandeb, the Canals of Suez and Panama, the Turkish Straits and the entrance to...

Holding strategic oil stocks is at first sight an obvious tool to address potential disturbances in supplies. Rationally defining the desirable size of stocks and designing rules for their predictable use is an elusive task, however. A key conceptual difficulty arises in the distinction between...