ExplorationCuba appraisal well gives encouraging signs to partnershipMelbana and Sonangol drilling Alameda appraisal well while making field development plansIn tune: Cuban President Miguel Diaz-Canel (in colouful shirt) takes part in a ceremony in Havana, earlier this year.Photo: AFP/SCANPIXRussell SearanckeNorway CorrespondentOslo