Published April 29th, 2013 - 03:00 GMT The reason these brothers killed lies in their own warped sense of helplessness and duty to defend other Muslims. Tags:Sadiq Jalal al Azm LatestPopular Iran refutes Trump's statement of negotiations with the US Trump postpones attack on Iran's power plants Wembley Hero O’Reilly Sends Title Warning to Arsenal Punch again? Abandoned baby titi monkey clings to teddy bear, melting hearts Nour Tamer Amin reacts to ex-husband and Malak Zaher engagement Loading content ... Subscribe Sign up to our newsletter for exclusive updates and enhanced content Subscribe Now Subscribe Sign up to get Al Bawaba's exclusive celeb scoops and entertainment news