For a nation to create and equip a military force is legitimate for only two purposes; for the defence of that nation or to come to the aid of any other nation governed by a legitimate government which has legitimately requested such aid against an external aggressor.
For a nation to use its military might for any other purpose means it adopts the role of the mercenary, selling it's expertise and the lives of those under its control to the highest bidder.
Civilization like charity begins at home. It's a foundation built on by example, considered, absorbed then leading on to practice. Neither the bullet or the bomb have any place in this process other than to sell its integrity to the profiteers and undermine its legitimate purpose.
Five weeks into governance and Cameron has chosen to adopt the role of War Criminal.
Now, why am I not surprised.