Transnistria declared a state of emergency ahead of an anticipated halt in piped natural gas supplies from Russia.Daniel Mihailescu/AFP/Getty ImagesTransnistria is facing heating cuts after a halt in piped Russian natural gas supplies to Europe via Ukraine.The gas halt follows Ukraine's decision to not renew a gas transit contract with Russia.EU countries, like Slovakia, still rely on Russian gas, highlighting geopolitical risks.A European region is grappling with freezing temperatures in winter after Russian natural gas stopped flowing to Europe via Ukraine.On Monday, local energy company Tirasteploenergo warned residents in Transnistria, a breakaway region of Moldova, that heating and hot water services would be cut from 7 a.m.