Russia 's energy monopoly Gazprom cuts off gas supplies to Ukraine . Company says Ukraine owes it about $ 2 billion for past natural gas deliveries . Comment: Gazprom cut supplies on January 1 , 2006 , but turned supply back on a day later .
Russia 's energy monopoly Gazprom cuts off gas supplies to Ukraine . Company says Ukraine owes it about $ 2 billion for past natural gas deliveries . Gazprom says supplies to other European customers wo n't be affected . Gazprom cut supplies on January 1 , 2006 , but turned supply back on a day later .