(FILES) In this file photo taken on July 22, 2015 Ukrainian film director Oleg Sentsov looks out from a defendants' cage during a hearing at a military court in the city of Rostov-on-Don. When the World Cup kicks off in Russia on June 14, 2018 Ukrainian film director Oleg Sentsov, who is serving a 20-year prison sentence in Russia, will have spent a month without food. Sentsov says he is ready to die and the worst effects of his high-profile hunger strike are expected to kick in just as the month-long football extravaganza gets into high gear. / AFP PHOTO / SERGEI VENYAVSKY