International humanitarian law Study Guide

📖 Core Concepts International Humanitarian Law (IHL) – the body of rules that govern how wars are fought and protect those not taking part in hostilities. Jus in bello vs. jus ad bellum – jus in bello (IHL) regulates conduct after armed conflict starts; jus ad bellum deals with the legality of going to war. Two historical streams – Law of The Hague (weapons, conduct of hostilities) and Law of Geneva (protection of persons). Protected persons – anyone hors de combat (out of fight) or not participating in hostilities (civilians, wounded, POWs, medical personnel). Key instruments – 1949 Geneva Conventions (4), 1977 Additional Protocols I & II, customary international law, and treaty bans on specific weapons. 📌 Must Remember Four 1949 Conventions protect: wounded/sick, ship‑wrecked, prisoners of war, civilians. Common Article 3 – minimum humane standards for non‑international conflicts (no torture, no murder, care for wounded). Principle of Distinction – always separate combatants/military objectives from civilians/civilian objects. Principle of Proportionality – attacks must not cause civilian harm “excessive” to the anticipated military advantage. Prohibition of Perfidy – cannot kill or attack while feigning protected status (e.g., wearing enemy uniform). Red Cross/Red Crescent/Red Crystal – emblem indicates protected medical personnel and facilities. War crimes – serious breaches (e.g., willful killing of civilians, torture, use of banned weapons). 🔄 Key Processes Classifying a Conflict Determine if it is international (between states) → Geneva Conventions I‑IV apply. If non‑international (within a state) → Common Article 3 + Protocol II apply. Applying the Principle of Distinction Identify combatants (uniform, open carry, command structure). Identify military objectives (objects contributing effectively to military action). Exclude protected persons/objects from attack. Conducting an Attack (Protocol I Art. 57) Precaution 1: Verify target is a legitimate military objective. Precaution 2: Choose means that minimize civilian harm. Precaution 3: Cancel or suspend attack if disproportionate civilian damage is expected. Accountability Workflow Alleged violation → investigation (national/international). If war crime → prosecution by ICC or ad‑hoc tribunals. Reparation – restitution, compensation, rehabilitation, satisfaction, guarantees of non‑repetition. 🔍 Key Comparisons Hague Law vs. Geneva Law Hague: regulates means & methods of warfare, defines combatants, focuses on conduct of hostilities. Geneva: protects persons (civilians, wounded, POWs) and regulates treatment of those hors de combat. International vs. Non‑International Conflict International: all four Geneva Conventions + Protocol I (if ratified). Non‑International: Common Article 3 + Protocol II (if ratified). Protected vs. Unprotected Civilians Protected: civilians not taking part in hostilities, even in occupied territory. Unprotected: civilians who directly participate in hostilities lose protection for the duration of that participation. ⚠️ Common Misunderstandings “All civilians are always protected.” – Civilians lose protection while directly participating in hostilities. “The Hague Conventions are obsolete.” – They still govern weapon restrictions and combatant status; many provisions are now customary law. “Only states can be liable for war crimes.” – Individuals (commanders, soldiers) can be criminally responsible. “Perfidy is the same as deception.” – Perfidy involves treacherous misuse of protected signs; ordinary deception (e.g., feints) is lawful. 🧠 Mental Models / Intuition “Target‑Shield” Model: Treat every potential target as a shield that must be examined for (1) legitimacy, (2) proportionality, (3) precaution before firing. “Two‑Stream Lens”: When reading a scenario, first ask “Is this a weapon/means issue?” (Hague) → then “Is this a protection issue?” (Geneva). “Red Emblem = Safe Zone”: Anything bearing the Red Cross/Crescent/Crystal is off‑limits; if it’s attacked, the act is perfidious. 🚩 Exceptions & Edge Cases Loss of POW status – Combatants who commit grave breaches lose POW protections after a competent tribunal judgment. Customary law vs. treaty ratification – Even states that haven’t ratified a convention are bound by customary rules derived from it. Reprisal attacks – May be lawful only if they meet strict necessity and proportionality tests; unlawful when directed at civilians. Children under 18 – Absolute prohibition on recruitment for hostilities; they retain civilian protection even if present in combat zones. 📍 When to Use Which Deciding the governing instrument: International armed conflict → Apply Geneva Conventions I‑IV + Protocol I (if ratified). Non‑international armed conflict → Apply Common Article 3 + Protocol II (if ratified). Choosing a legal argument for a target: Use Hague rules to argue a weapon is prohibited (e.g., blinding lasers). Use Geneva rules to argue a person/object is protected (e.g., medical units). Assessing proportionality: Quantify expected civilian casualties vs. concrete military advantage; if “excessive,” the attack is illegal. 👀 Patterns to Recognize Red symbols → protected status (cross, crescent, crystal, white flag). Uniform + open carry → lawful combatant; absence → possible unlawful combatant. Language of “direct participation” signals a temporary loss of civilian protection. Bans on specific weapons often appear together: mines, blinding lasers, cluster munitions, incendiary attacks on civilians. 🗂️ Exam Traps Distractor: “All civilians are immune from any targeting.” → Wrong because of direct participation exception. Distractor: “Perfidy is allowed if it leads to a quick victory.” → Perfidy is categorically prohibited. Distractor: “Customary law only applies to states that have ratified the treaty.” → Customary law binds all parties, ratified or not. Distractor: “The Hague Conventions no longer apply after 1949.” → Still operative; many provisions are customary. Distractor: “A combatant who violates the law loses all rights.” → Unlawful combatants must still receive humane treatment and a fair trial.