Yahoo Japan-Askul dispute escalates as CEO of online retailer seeks to force stake sale

Yahoo Japan Corp. employees speak to a customer in front of the company's logo at its headquarters in Tokyo, Japan, on Tuesday, June 18, 2013. Yahoo Japan, operator of the country's most-visited Web portal, targets at least 10 percent gain in revenue from advertisement this fiscal year on corporate demand, as the economy shows signs of improvement. Photographer: Akio Kon/Bloomberg