In addition to a focus on its broad retail operation, Walmart keeps tabs on threats with its Global Security Operations ...

Walmart -- which employs about 2.2 million people worldwide -- said about 10,000 of its U.S. associates would be affected by the closings. More than 100 of those stores are located in the nation's ...

Amazon said it's adding more than 4,000 "smaller" communities to its same-day and next-day delivery service. The move challenges Walmart, which can deliver from its more than 4,600 stores.