MOORE, Okla. - A monstrous tornado at least a half-mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. At least 51 people were killed, and officials said the death toll was expected to rise.

Block after block lay in ruins.

The National Weather Service issued an initial finding that the tornado was an EF-4 on the enhanced Fujita scale, the second most-powerful type of twister.

SOCHI, Russia - The mountains of Sochi are now home to Potanin's slope, Gazprom's gondola lift and Sberbank's ski jump.

In contrast, the much-larger 2012 Summer Olympics in London cost about $14.3 billion and the 2008 Summer Games in Beijing cost about $40 billion.

For President Vladimir Putin, the games have been a matter of pride.