Russia–Ukraine gas disputes

The Russia–Ukraine gas disputes refer to a number of disputes between Ukrainian oil and gas company Naftogaz Ukrayiny and Russian gas supplier Gazprom over natural gas supplies, prices, and debts. These disputes have grown beyond simple business disputes into transnational political issues—involving political leaders from several countries—that threaten natural gas supplies in numerous European countries dependent on natural gas imports from Russian suppliers, which are transported through Ukraine.

Source: Wikipedia — Russia–Ukraine gas disputes (CC BY-SA 4.0)