Czech prime minister Bohuslav Sobotka has called a meeting of the State Security Council on May 20. The meeting will focus on the Czech Republic’s ability to cover its natural gas needs and help out near neighbours Slovakia and Hungary if Russian gas supplies are halted. Fears that Russian supplies to central and western Europe could be cut in June if Ukraine does not pay its debts for past deliveries were raised at a security conference in Bratislava by Slovak prime minister Robert Fico. Fico cited a warning letter from Russian president Vladimir Putin. Russia has said the warning applies to gas exports to Ukraine and not the rest of Europe.