Naftogaz to have $4 bn deficit in 2010?

According to prediential representative on energy security Mr. Sokolovsky Naftogaz should have about $4 bn deficit in 2010. In a simple addition substraction game he told that in 2010 Naftogaz should pay Russia about $10 bn for gas, while Ukrainian market is forecasted to generate in payments about $5 bn. Where will the other $5 bn come? Mr. Sokolovsky thinks that there will be a contraction in gas demand for about $1 bn. In the end we have 10-5-1=4, which is $4 bn that Naftogaz will miss. Source.