Russia's top gas producer, Gazprom, said on Tuesday that Ukraine has not met its payment deadline for June resulting in its total debt to the company rising to $5.3 billion.
"The unwillingness of Ukraine … to pay for Russian gas is becoming chronic and once again shows that the move to pre-payment, which is foreseen in the contract, is the only real solution," Gazprom CEO Alexei Miller said in a statement.
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