carl, from oxford internet institute, have. carl, from oxford internet institute. very — have. have. carl, from oxford internet institute, very good to _ have. carl, from oxford internet institute, very good to talk- have. carl, from oxford internet institute, very good to talk to. l have. carl, from oxford internet i institute, very good to talk to. my institute, very good to talk to. wi pleasure. ukraine says it's shot down a sophisticated russian spy plane, and damaged another in what analysts say would be a blow to moscow's air power. ukraine's army chief distributed this video showing two planes disappearing from radar above the azov sea. he claims ukraine's airforce had "destroyed" an a—50 long—range radar detection aircraft. according to some reports, the other aircraft was damaged, but did manage to land. the a—50 is a high value target which detects air defences and co—ordinates targets for russian jets. analysts at the uk's ministry of defence say russia "likely" had six operational a—50s, which cost hundreds of millions of dollars. russia has yet to comment on the re