http://www.cnn.com/2005/WORLD/europe/12/31/russia.ukraine/index.html MOSCOW, Russia (CNN) -- A former Kremlin adviser has criticized Moscow's New Year deadline for Ukraine to accept a large gas-price increase, saying the demand indicated resurgent Russian imperialism. Meanwhile on Saturday Europe warily watched the standoff amid warnings that its supplies could also be affected. Ukraine has hitherto received one-third of its natural gas from Russia at the heavily subsidized rate of $50 (Ã¢â€šÂ¬42) per 1,000 cubic meters, in addition to its domestic supply and imports from Turkmenistan. But Russia's Kremlin-controlled gas company Gazprom has now threatened to cut supplies to Ukraine on Sunday if Kiev does not agree to pay more than four times the current rate, which is closer to what most Western European countries pay. "If Ukraine doesn't sign a contract to buy gas by the appointed hour before the New Year, then at 10 o'clock a.m. on the 1st of January we will put a complete stop to delivery of all gas from the Russian Federation to the Ukraine," said Gazprom CEO Alexei Miller. "These actions will be precise and resolute."