In Iraq, the captors of four kidnapped Western aid workers have extended their threat to execute them by another 48 hours until Saturday. The Swords of Righteousness Brigade has threatened to the kill four members of the Christian Peacemaker Teams unless all prisoners are freed from US and Iraqi-run detention centers. On Wednesday, the captors released a new video of the hostages. The video appears to show hostages Norman Kember, of London, and Tom Fox, of Virginia. Canadian hostages James Loney and Harmeet Singh Sooden were not shown.