Exxon Freezes 12 Billion In Venezuelan Oil Assets

CARACAS, Venezuela — The oil giant Exxon Mobil has won court orders freezing as much as $12 billion in petroleum assets controlled by Venezuela's government in an escalation of a dispute over efforts by President Hugo Chávez to assert greater control over the country's oil industry.

Venezuela's dollar-denominated bonds suffered their steepest drop in six months on Thursday on concerns that Mr. Chávez's government could face a protracted legal battle with Exxon, preventing the government from raising cash through the sale of refineries abroad if the economy here slows after years of torrid growth.