The 2009 gas crisis began with the failure of an agreement on gas prices and deliveries for 2009. Ukraine owed Gazprom $2.4 billion for gas already consumed and Gazprom requested payment before the start of a new supply contract.  In December 2008, despite Ukraine`s repayment of its debt of more than $1 billion, Gazprom maintained its position and intended to reduce its natural gas deliveries to Ukraine on 1 January 2009 if Ukraine did not repay the remaining $1.67 billion in natural gas debt and an additional $450 million in fines imposed on Gazprom.    On December 30, Naftohaz paid $1.522 billion of the outstanding debt, but the two parties could not agree on the 2009 price. Ukraine offered a price of $201 and then increased its proposed price to $235, while Gazprom asked for $250 per 1,000 cubic meters.  Negotiations between Gazprom and Naftohaz were suspended on 31 December.  Gas price negotiations for 2006 began in 2005. Gazprom insisted on a new price of $160 per 1,000 cubic meters. [Citation required] The Ukrainian government has agreed that price increases will be phased in in return for an increase in gas transit costs and changes to the payment method for cash in-kind transit.  [Check required] In May 2005, it was learned that 7.8 billion cubic metres of gas deposited by Gazprom in Ukrainian storage warehouses last winter had not been made available to the company. [Citation required] It was not known if the gas was missing, if it had disappeared due to technical problems or if it had been stolen.
 This question was raised in July 2005 by an agreement between Gazprom, Naftohaz and RosUkrEnergo, according to which Naftohaz sold 2.55 billion cubic meters of gas to RosUkrEnergo, which is to receive the Russian transit of 2005 and 5.25 billion cubic meters (185 billion cubic feet) to RosUkrEnergo.  However, negotiations between Gazprom and Naftohaz on gas prices and a new gas supply agreement have failed.  On 1 January 2006, Gazprom began to reduce pressure in pipelines from Russia to Ukraine.  On 30 December 2019, Gazprom and Naftogaz Ukrainy signed agreements on the transit of Russian gas through Ukraine for the period 2020-24 with transit volumes of 65 bcm in 2020 and 40 bcm per year thereafter. It is to this extent that we analyse how the agreement was concluded, the terms of the agreement and the transit flows that probably passed through Ukraine during the duration of the agreement.