Russian billionaire Roman Abramovich, who in addition to a money maker is governor of the Chukotka region on the Chuckchi Sea, is buying the biggest drill on earth a massive machine more than 60 feet wide. And the purchase renewed talk of a recurring, ambitious plan to carve a tunnel under the Bering Strait linking Russia and Alaska. But, for now at least, Abramovich people say the machine is intended only to dig tunnels to improve the infrastructure around the Black Sea resort of Sochi, where the Winter Olympics of 2014 are due to be held. The Russia Alaska connection idea persists, though. It is a notion that has been around since the days of Tsar Nicholas II and came up again in Russia as recently as last year. "Russian officials insist the tunnel could be ready within ten years. They argue that it would repay construction costs by stimulating up to 100million tons of freight traffic each year, as well as supplying oil, gas and electricity from Siberia to the US and Canada,&q