The Observer - Kremlin will favour Norwegian firms to develop Barents Sea field after differences with Bush scupper Russia's bid to join WTO

President Vladimir Putin is set to keep US oil companies out of a lucrative gas field in the latest sign of the deteriorating relationship between Moscow and Washington.

The Russian leader is expected to favour Norwegian companies and reject bids by America's Chevron and ConocoPhillips after failing to secure backing from the United States for his country's attempt to join the World Trade Organisation.