http://news.yahoo.com/s/ap/20080210/ap_on_re_la_am_ca/venezuela_us_exxon CARACAS, Venezuela - President Hugo Chavez on Sunday threatened to cut off oil sales to the United States in an "economic war" if Exxon Mobil Corp. wins court judgments to seize billions of dollars in Venezuelan assets. Exxon Mobil has gone after the assets of state oil company Petroleos de Venezuela SA in U.S., British and Dutch courts as it challenges the nationalization of a multibillion dollar oil project by Chavez's government. A British court has issued an injunction "freezing" as much as $12 billion in assets. "If you end up freezing (Venezuelan assets) and it harms us, we're going to harm you," Chavez said during his weekly radio and television program, "Hello, President." "Do you know how? We aren't going to send oil to the United States. Take note, Mr. Bush, Mr. Danger." Chavez has repeatedly threatened to cut off oil shipments to the United States, which is Venezuela's No. 1 client, if Washington tries to oust him. Chavez's warnings on Sunday appeared to extend that threat to attempts by oil companies to challenge his government's nationalization drive through lawsuits. "I speak to the U.S. empire, because that's the master: continue and you will see that we won't sent one drop of oil to the empire of the United States," Chavez said Sunday.