Article 147 of the Fourth Geneva Convention defines war crimes as: "Wilful killing, torture or inhuman treatment, including... wilfully causing great suffering or serious injury to body or health, unlawful deportation or transfer or unlawful confinement of a protected person, compelling a protected person to serve in the forces of a hostile power, or wilfully depriving a protected person of the rights of fair and regular trial, ...taking of hostages and extensive destruction and appropriation of property, not justified by military necessity and carried out unlawfully and wantonly."