By Jessica Wohl (Reuters) - Wal-Mart Stores Inc said on Thursday that this quarter would be challenging and gave a forecast that suggests profit will again miss Wall Street expectations, due in part to costs from its foreign bribery probe. The company also reported quarterly earnings just below Wall Street estimates, and revenue came in lower than expected. Everything from tax pressures on shoppers to a cool start to spring led to an unexpected drop in sales at Walmart U.S. stores open at least a year. (Graphic on Wal-Mart earnings http://link.reuters. ...

WASHINGTON (AP) — The general who commands the nation's nuclear forces said Thursday he has ordered further review of failings discovered among Air Force officers who operate nuclear missiles. But he told Congress Thursday he was not alarmed by their shortcomings.