Second Optional Protocol to the International Covenant on Civil and Political Rights relating the abolition of capital punishment is adopted.

The Second Optional Protocol to the International Covenant on Civil and Political Rights, aiming at the abolition of the death penalty, is a subsidiary agreement to the International Covenant on Civil and Political Rights. It was created on 15 December 1989 and entered into force on 11 July 1991. As of December 2024, the Optional Protocol has 92 state parties. The most recent country to ratify was Zambia, on 19 December 2024.

Capital punishment, also known as the death penalty and formerly called judicial homicide, is the state-sanctioned killing of a person as punishment for actual or supposed misconduct. The sentence ordering that an offender be punished in such a manner is called a death sentence, and the act of carrying out the sentence is an execution. A prisoner who has been sentenced to death and awaits execution is condemned and is commonly referred to as being "on death row". Etymologically, the term capital refers to execution by beheading, but executions are carried out by many methods.