KembaraXtra - Legal Terms - Self-Defence

Self-defence is a legal defence available where a person uses reasonable force to protect themselves or another person from an actual or threatened attack. The defence can apply to offences against the person, including homicide. The force used must be necessary in the circumstances as the defendant honestly believed them to be. It must also be reasonable or legally permitted in degree. The defence reflects the right to protect life and personal safety.

A person does not have an absolute legal duty to retreat before acting in self-defence. However, the possibility of safely withdrawing may be relevant when assessing whether force was necessary. The law recognizes that people confronted by sudden danger cannot calculate the exact level of force with precision. Juries must therefore consider the pressure and urgency of the situation. The defendant’s genuine perception of events is important.

Self-defence overlaps with the statutory right to use reasonable force to prevent crime. That statutory power applies to both police officers and private citizens. The common-law defence may also operate where the attacker is not legally responsible for a crime. The defendant may defend family members, strangers, or other persons under threat. The protection is not limited to defending oneself personally.

Special rules apply in certain householder cases involving intruders. A householder may sometimes rely on self-defence even where the force used was disproportionate. However, grossly disproportionate force will not be protected. The court considers the circumstances as the householder genuinely believed them to be. Fear, confusion, and the need for immediate action are relevant factors.

In international law, self-defence is also a recognized basis for the lawful use of force by states. Article 51 of the United Nations Charter preserves the inherent right of individual and collective self-defence following an armed attack. Debate continues over whether anticipatory self-defence is permitted before an attack occurs. Any force used must generally satisfy necessity and proportionality. Self-defence therefore operates in both domestic criminal law and international law.