evidence: Kaiyan Homi Kaikobad, The Shatt-al-Arab Boundary Question: A Legal Reappraisal (Oxford: Clarendon Press, 1988). [...] The reactivation of the dispute in the late 1960s (culminating in April 1969 with the shah’s abrogation of the 1937 Tehran treaty) resulted in the appearance of a number of articles, of which Alexander Melamid’s and Vahé Sevian’s are the best (A. Melamid, "The Shatt al-Arab Boundary Dispute," in The Middle East Journal, vol. 22 (1968), pp. 351–57 [...] See Melamid, "The Shatt al-Arab boundary dispute"; Richard Schofield, "Positional Disputes and the Twentieth Century Utilisation of the Shatt al-Arab—International Right or International Need," in Boundaries and State Territory in the Middle East and North Africa, ed. G.H. Blake and R.N. Schofield (Wisbech: Menas Press, 1987).