He told The Telegraph: “In the face of a crisis of this scale, with the potential for so much human misery, this is not the moment for decision-makers to be on holiday. Parliament needs to be recalled and the West needs to face up to its responsibilities. We have to make sure that we do not come out of this wringing our hands at another terrible genocide and saying “next time, we must do better”. We are being put to the test now and history will be our judge.”