Thanks to the work of a few GLAM people, Al Jazeera are now making their flickr photostream available with a CC share-alike license.
Yes, that means Wikinews will be able to use them.
http://www.flickr.com/photos/aljazeeraenglish/sets/
I don't know if this will later extend to video footage, but it'll be worth keeping an eye on their CC page.
Brian McNeil.