LONDON — Thousands of British Airways cabin crews began a five-day strike today, forcing cancellation of many flights from London Heathrow airport, though the airline claimed it will still be able to carry 70 percent of booked passengers.

BA said all flights at London Gatwick and London City airports would operate as normal, and it expected to operate more than 60 percent of long-haul flights and half of its short-haul schedule from London Heathrow.

The walkout follows the failure of weekend talks between the Unite union and the airline. A key issue is the union's demand that the airline restore employee travel benefits, cut after a previous strike.

CAMDEN, N.J. — Campbell Soup says its third-quarter net income slipped 3.4 percent as restructuring expenses and taxes rose but its U.S. soup revenue increased.CEO Douglas Conant says its U.S. beverage and sauce businesses led by V8 V-Fusion juices and Prego and Pace sauces improved.The world's largest soup maker says net income declined to $168 million, or 49 cents per share while overall revenue increased 2 percent to $1.8 billion. U.S. soup revenue also rose 2 percent.

NEW YORK — IBM says it is buying AT&T's Sterling Commerce unit, which makes business software, for $1.4 billion.The deal announced today would be IBM's largest acquisition since it bought Cognos in 2008.AT&T, then known as SBC Communications, paid $3.9 billion for Sterling in 2000, near the peak of the Internet bubble. The unit, which is based in Dublin, Ohio, has little connection to AT&T's main telecommunications business.