Article 2 of the European Convention on Human Rights protects the right to life. The article contains a limited exception for the cases of lawful executions and sets out strictly controlled circumstances in which the deprivation of life may be justified. The exemption for the case of lawful executions has been subsequently further restricted by Protocols 6 (restriction of the death penalty to war time) and 13 (abolition of the death penalty), for those parties who are also parties to those protocols. The European Court of Human Rights has commented that "Article 2 ranks as one of the most fundamental provisions in the Convention". The obligations on a State under Article 2 consist of three principal aspects: the duty to refrain from unlawful deprivation of life; the duty to investigate suspicious deaths; and in certain circumstances, a positive obligation to take steps to prevent avoidable losses of life.
Article 2 – Right to life
1. Everyone's right to life shall be protected by law. No one shall be deprived of his life intentionally save in the execution of a sentence of a court following his conviction of a crime for which this penalty is provided by law.
2. Deprivation of life shall not be regarded as inflicted in contravention of this article when it results from the use of force which is no more than absolutely necessary:
The first, and most obvious obligation under article 2 is for the state, through its agents, to refrain from itself causing the deprivation of life, that is to say that domestic law must regulate the permissible use of lethal force by agents of the state. The court first considered the obligations imposed by Article 2 in the case of McCann and Others v United Kingdom brought by the relatives of three individuals shot by members of the SAS in Gibraltar.
This case imposes two obligations to the State:
If the state has not followed these obligations then it will be found to be an unlawful killing. Further reading of cases on the matter include: Kelly and Others v UK; Osman v UK; McKerr v UK; Jordan v UK; Shanaghan v UK; and R(Amin) v SOS Home Dept itself.
Article 2 has been interpreted to include the positive requirement of the state to ensure preventative measures are taken to protect citizens. The leading case on the matter is Osman v UK which overruled the UK court's decision in Hill v West Yorkshire as to the fact that public bodies could not be held to be negligent.