In order to resume gas shipments, Ukraine must first pay $1.45 billion in debt for 2013 and then agree on installments, Gazprom CEO Alexei Miller told journalists.

Energy Minister Alexander Novak said the International Monetary Fund (IMF) was supposed transfer another $1.3 billion tranche soon. Russia is expecting this to go towards debt settlement.

Novak added that Russia was ready to recalculate Ukraine's gas debt retroactively for April-June of this year