A security guard walks past electronic display showing the US dollar and Japanese yen exchange rate in Tokyo

 
A security guard walks past electronic display showing the US dollar and Japanese yen exchange rate in Tokyo
A security guard walks past an electronic display showing the U.S. dollar and Japanese yen exchange rate in Tokyo January 28, 2008. Japanese stocks tumbled nearly 4 percent on monday as poor earnings results increased fears that a slowing U.S. economy is hitting Japanese firms, prompting investors to dump shares across the board. REUTERS/Michael Caronna (JAPAN)