An engineer oversees a system at the gas storage facility of Hungarian state-owned energy group MVM in Zsana November 3, 2014. Hungary will not face gas supply problems this winter as stores are close to 70 percent full, containing about 4.3 billion cubic metres of gas, MVM executives said on Monday. REUTERS/Laszlo Balogh (HUNGARY - Tags: ENERGY BUSINESS COMMODITIES POLITICS)