The Council of Europe Convention on the Protection of Children against Sexual Exploitation and Sexual Abuse, also known as the Lanzarote Convention, requires criminalization of all forms of sexual offences against children. The Convention is based on the four Ps: prevention of violence, the protection of child victims, the prosecution of offenders and the participation of children themselves. All 47 Member States of the Council of Europe have signed it and 44 of them have ratified it. Several non-member states have also expressed their interest in acceeding to the Convention.