As far as I can see, nothing compels or even excuses belligerency except national defence obligations. Humanitarian components are icing on the cake. “Responsibility to protect” strikes me a slogan of liberal imperialism; the battle cry of post-modern civilization’s missionaries, the casus belli of self-appointed knights errant with an unquenchable thirst for running the world. Disguised as academics, adventurers, mercenaries, bureaucrats, bien-pensants and do-gooders, these 21st-century Don Quixotes consider themselves the new global aristocracy. They’re the enlightened ones, expecting to become the anointed ones before long, and rule as functionaries of various supranational bodies — governmental, non-governmental, or merely mental — in what no doubt many believe is humanity’s best interest.

