The guy on the right, in any plain reading of the Third and Fourth Geneva Conventions of 1949, has a case to answer for violations that are "grave breaches of international humanitarian law" a.k.a. war crimes, particularly murder without due process in Pakistan.
The guy on the left supported the invasion of Iraq which, in any plain reading of the Nuremberg Principles is also a war crime, one that got Field Marshall Wilhelm Keitel hung with respect to Czechoslovakia. Of course, Keitel also authorized treatment of Russian prisoners of war that were also war crimes, and that also got him hung..
I'm not sure about the actual photographer, but Denmark hasn't been noticeably wise about NATO excursions in the Middle East and North Africa, and of course Afghanistan. Also, the NATO Secretary-General is Danish, and rah-rah about humanitarian violence.
They're all having a great time. I'm sure it will play well in the Daily Mail and Vanity Fair, not to mention their high school year books..