“Rest in Peace, Chris Stevens. Prophet Muhammad, peace be upon him, set a precedent when representatives of the predominantly Christian people of Najran visited him. As Muslims, we believe ambassadors are to be respected and not harmed in any way. The criminals responsible for Chris Steven’s brutal murder were acting well and truly outside the boundaries of Islam. We are deeply saddened that more isn’t being done to honour the life of this peaceful man. Muslims believe that anyone who is killed while doing a noble work is a shaheed (martyr). Chris Stevens is a martyr of the American people, who was killed while peacefully serving his nation abroad. His memory and legacy should be honoured and remembered.”
~ Paul Salahuddin Armstrong
Al-‘Aqib and Saiyid, the rulers of Najran, came to Allah’s Apostle with the intention of doing Lian. One of them said to the other, “Do not do (this Lian) for, by Allah, if he is a Prophet and we do this Lian, neither we, nor our offspring after us will be successful.” Then both of them said (to the Prophet ), “We will give what you should ask but you should send a trustworthy man with us, and do not send any person with us but an honest one.” The Prophet said, “I will send an honest man who is really trustworthy.” Then every one of the companions of Allah’s Apostle wished to be that one. Then the Prophet said, “Get up, O Abu ‘Ubaida bin Al-Jarrah.” When he got up, Allah’s Apostle said, “This is the Trustworthy man of this (Muslim) nation.”
~ Narrated Hudhaifa, Bukhari 5.663
Paul Salahuddin Armstrong 
Of course, the American ambassador and his colleagues, killed in Lybia, were the victims of a horrible crime. But, we also must remember a Kazakh woman, killed by a drunken German diplomat in Kazakhstan, 2004, and a Kazakh migrant gunned down for no reason by a US policeman in 2011. The criminals have been acquitted so far. See more:
http://blog.daniyar.info/2012/07/25/peculiarities-of-western-justice.aspx