Moon Jae-in, former human rights lawyer and presidential candidate of the main opposition Democratic United Party, attends his last campaign in Busan, Dec 18, 2012. Moon is a challenger to conservative and right wing ruling Saenuri Party's Park Geun-hye, who is the daughter of former military dictator Park Chung-hee. The country's presidential election will be held on Dec 19. [Photo/Agencies]

Two women play in the snow in an air temperature of about minus 30 C (minus 22 Fahrenheit) in Russia's Siberian city of Krasnoyarsk, Dec 18, 2012. A severe cold spell has brought temperatures around 10-20 C lower than average across Siberia, according to media reports. [Photo/Agencies]