When is war right?

As I write this article, the 70th anniversary of D-Day has just been remembered. Reflecting on that ‘longest day’ reminded me of two things I’m thankful to God for. First I’m thankful for all who were willing to fight and face death for their people and for the sake of justice and liberty. And second, I’m thankful that I never lived in those dark days when Nazism needed to be confronted and defeated.

But even those of us who have never gone to war cannot afford to ignore the question of ‘when...