Wal-Mart , Kohl 's Corp. and Big Lots Inc. were among the merchants posting May sales below Wall Street 's modest expectations .
Wal- Mart , Kohl 's Corp. , Family Dollar Stores Inc . , and Big Lots Inc. posted May sales that fell below Wall Street 's modest expectations .
The Prime Ministers of China , Russia and four central Asian nations have met in Beijing and approved a budget for their regional security grouping .