In his latest report (S/2013/149) the Secretary- General encourages Member States to include specific training courses for their peacekeeping troops. Nevertheless, our methods have not been sufficiently successful in fighting these crimes. That scourge continues to undermine the credibility of United Nations peacekeeping missions — not to mention the immense harm done to the individuals and communities affected by the behaviour of those who were deployed in the field to protect them and ensure peace. The zero- tolerance policy must be urgently implemented, and everyone must be resolutely committed to bringing perpetrators to justice.