Original sentence: On 15 December 2005, based on a bank deposit of $4M and its American CEO's Houston home, Yukos filed for bankruptcy protection in the United States, estimating its assets at $12.3 billion and its debts at $30.8 billion, including "alleged taxes owed to the Russian government"
Edited sentence: On 15 December 2006, based on a bank deposit of $4M and its American CEO's Houston home, Yukos filed for bankruptcy protection in the United States, estimating its assets at $12.3 billion and its debts at $30.8 billion, including "alleged taxes owed to the Russian government"