CNN.com - Breaking News, U.S., World, Weather, Entertainment & Video News

CNN.com - Breaking News, U.S., World, Weather, Entertainment & Video News: "President Hugo Chavez's government took over Venezuela's last remaining privately run oil fields today, intensifying a decisive struggle with big oil over one of the world's most lucrative deposits. The companies giving up control include BP, ConocoPhillips, Exxon Mobil and Chevron."