Russian Gazprom can use the fighting near Sudzha as a reason to stop gas transit; what consequences will this have for the EU and Ukrainian markets?

According to Reuters, there is a risk that Gazprom could use the fighting near the Sudzha gas station, through which Russian gas transits through Ukraine to EU countries, as a reason to stop gas supplies. As a result, Russia could lose about $4.5B in annual income. Although the EU is aware of…