Russia cut its gas supply to top Dutch trader GasTerra on Tuesday, escalating the economic battle between Moscow and Brussels and pushing up European gas prices. The move comes a day after Denmark flagged a potential end to its Russian gas supply and the European Union's toughest measure yet against Russia for its invasion of Ukraine, an agreement to halt sea-borne imports of its oil. GasTerra, which buys and trades gas on behalf of the Dutch government, said it had contracted elsewhere for the 2 billion cubic metres of gas it had expected to receive from Gazprom through October. "This...