Barking Dog Foils Rescue as Hostages Killed by al-Qaeda

A U.S. photojournalist and a South African aid worker died in Yemen after al-Qaeda militants, tipped off by a barking dog to an approaching U.S.-led rescue mission, shot their captives before being killed themselves.

The military operation to extract American hostage Luke Somers, the second rescue attempt in two weeks, came after U.S. officials became convinced that extremists from al-Qaeda in the Arabian Peninsula would execute him today, U.S. officials said.