The Convention against Torture and Other Cruel, Inhuman or Degrading Treatment or Punishment (commonly known as the United Nations Convention against Torture (UNCAT)) is an international human rights treaty, under the review of the United Nations, that aims to prevent torture and other acts of cruel, inhuman, or degrading treatment or punishment around the world. The Convention requires states to take effective measures to prevent torture in any territory under their jurisdiction, and forbids states to transport people to any country where there is reason to believe they will be tortured. The text of the Convention was adopted by the United Nations General Assembly on 10 December 1984 and, following ratification by the 20th state party, it came into force on 26 June 1987. 26 June is now recognized as the International Day in Support of Victims of Torture, in honor of the Convention. Since the convention's entry into force, the absolute prohibition against torture and other acts of cruel, inhuman, or degrading treatment or punishment has become accepted as a principle of customary international law. As of June 2019, the Convention has 166 state parties. The Covenant follows the structure of the Universal Declaration of Human Rights (UDHR), International Covenant on Civil and Political Rights (ICCPR) and the International Covenant on Economic, Social and Cultural Rights (ICESCR), with a preamble and 33 articles, divided into three parts: Part I (Articles 1–16) contains a definition of torture (Article 1), and commits parties to taking effective measures to prevent any act of torture in any territory under their jurisdiction (Article 2). These include ensuring that torture is a criminal offense under a party's municipal law (Article 4), establishing jurisdiction over acts of torture committed by or against a party's nationals (Article 5), ensuring that torture is an extraditable offense (Article 8), and establishing universal jurisdiction to try cases of torture where an alleged torturer cannot be extradited (Article 5). Parties must promptly investigate any allegation of torture (Articles 12 and 13), and victims of torture, or their dependents in case victims died as a result of torture, must have an enforceable right to compensation (Article 14). Parties must also ban the use of evidence produced by torture in their courts (Article 15), and are barred from deporting, extraditing, or refouling people where there are substantial grounds for believing they will be tortured (Article 3). Parties are required to train and educate their law enforcement personnel, civilian or military personnel, medical personnel, public officials, and other persons involved in the custody, interrogation, or treatment of any individual subjected to any form of arrest, detention, or imprisonment, regarding the prohibition against torture (Article 10). Parties also must keep interrogation rules, instructions, methods, and practices under systematic review regarding individuals who are under custody or physical control in any territory under their jurisdiction, in order to prevent all acts of torture (Article 11).