This publication contains two sections: First, an introductory text on parliamentary oversight with the aim to help parliamentarians and non-parliamentarians alike to understand what the powers of an ambitious, competent and well-prepared parliament and its committees can be and what good they can do. Secondly, the publication contains a ‘self-assessment’ kit that helps parliamentary and non-parliamentary security and governance experts understand where their parliament stands and what further improvements could be made in the light of ‘best practices’.