It appears that the Ukrainians have siphoned off the Russian gas destined to Europe for themselves because they don't want (or cannot) to pay market prices for their own gas. The Ukies have in fact taken the Europeans hostage. Good.
Serves the bloody Europeans well for their support for the worst forms of Ukrainian nationalism and their anti-Russian policies, including in the war in Georgia this summer.
The Ukraine - some 'ally' for NATO, eh?