The parties are concerned with an Oil Mining Lease (No 113) offshore from the Federal Republic of Nigeria. Their relations are governed in particular by a Joint Operating Agreement dated 21 September 2007. Operations in the field are said currently to be loss making, with corresponding pressures for the parties. Wells Aje-4 and Aje-5 are operational. The parties are in dispute over whether development of wells Aje-6 and Aje-7 has been properly approved. Development of those wells will involve more cash calls on the parties....