Prosecutors have a duty to withdraw cases if the case does not reach the charging standard (Attorney General of the Union Law 2010, Art 36(i); United Nations Convention against Corruption, Article 11 implementation guide and evaluative framework). Step 1: Is success likely: • Is there evidence to prove every element of the crime beyond a reasonable doubt? Is the evidence accessible, admissible, reliable? • Are the witnesses credible? • Are there strong defences available to the accused?