The Encyclopædia Britannica Eleventh Edition defines a hostage as "a person who is handed over by one of two belligerent parties to the other or seized as security for the carrying out of an agreement, or as a preventive measure against certain acts of war.
Hostage-takers understand that by targeting democratic governments, they are more likely to seek concessions and/or negotiate with them based on the level of accountability they must face from their citizens who elect them into office, and the media within the country which reports on such events in a capacity independent from the state.
These obligations would be in the form of signing of a peace treaty, in the hands of the victor, or even exchange hostages as mutual assurance in cases such as an armistice.
The Anglo-Saxon practice caused the element gīsl = "hostage" in many old Germanic personal names, such as Ēadgils, Cynegils, Gīslheard, and Gīslbeorht.
The practice of taking hostages is very ancient, and has been used constantly in negotiations with conquered nations, and in cases such as surrenders, armistices and the like, where the two belligerents depended for its proper carrying out on each other's good faith.
The position of a hostage was that of a prisoner of war, to be retained until the negotiations or treaty obligations were carried out, and liable to punishment (in ancient times), and even to death, in case of treachery or refusal to fulfil the promises made.
[1] In France, after the revolution of Prairial (June 18, 1799), the so-called law of hostages was passed, to meet the royalist insurrection in La Vendée.
[4][1] In later times the practice of official war hostages may be said to be confined to either securing the payment of enforced contributions or requisitions in an occupied territory and the obedience to regulations the occupying army may think fit to issue; or as a precautionary measure, to prevent illegitimate acts of war or violence by persons not members of the recognized military forces of the enemy.
In 1870 the Germans found it necessary to take special measures to put a stop to train-wrecking by "Francs-tireurs" - i.e. "parties in occupied territory not belonging to the recognized armed forces of the enemy", which was considered an illegitimate act of war.
In 1900 during the Second Boer War, by a proclamation issued at Pretoria (June 19), Lord Roberts adopted the plan for a similar reason, but shortly afterwards (July 29) it was abandoned.
[1] Article 50 of the 1907 Hague Convention on Land Warfare provides that: "No general penalty, pecuniary or otherwise, can be inflicted on the population on account of the acts of individuals for which it cannot be regarded as collectively responsible."
Strictly they were not hostages, for they had not been handed over or seized as security for the performance of any undertaking or as a preventive measure, but merely in retaliation for the death of their leaders E. V. Duval and Gustave Flourens.
Among the 52 victims who were shot in batches the most noticeable were Georges Darboy, archbishop of Paris, the Abbé Deguery, curé of the Madeleine, and the president of the Court of Cassation, Louis Bernard Bonjean.
[1][8] Taking hostages in modern terms is considered a crime or an act of terrorism; the use of the word in this sense of abductee became current only in the 1970s.
Common Article 3 of the 1949 Geneva Conventions states that the taking of hostages during an internal conflict is a war crime and shall remain prohibited at any time and in any place whatsoever.
The United Kingdom has a similar policy, but many continental European countries, including France and Spain, routinely pay ransom.