John B. S. Haldane

But if, on the other hand, we should be justified in rejecting it, if there testified on oath, then, supposing our rules of evidence to be sound, we may be excused if we hesitate elsewhere to give it credence.

So my own suspicion is that the attorney has stopped this prosecution because part of her defence was to question legality and that would have brought his advice into the public domain again and there was something fishy about the way in which he said war was legal.