International law since the Second World War has sought to restrain violence and replace the logic of power with rules. By affirming sovereign equality and prohibiting the threat or use of force, the UN Charter tried to break the cycle of retaliation and war, making force a limited, rules-bound exception. The targeting of national leaders and senior political officials now poses a major question for that legal order.
“Leaders in the Crosshairs” describes more than a security phenomenon. It asks whether a targeted operation against a senior political official can be justified in every circumstance, and where lawful military action ends. When the target is the highest political authority of a state rather than a soldier in battle, the law on the use of force, humanitarian law, human rights, state responsibility, sovereignty, and officials' rights and immunities all become relevant.
Such targeting matters to the study of terrorism and political violence as well. The choice of a political or security figure can reflect symbolic status and psychological or political effects, not just an operational role. An attack may aim to influence political calculations, deter others, weaken institutions, or send a message to a government or society. Analysis therefore intersects with research on political signaling and target selection, though each operation requires a separate legal assessment.
Article 2(4) of the UN Charter prohibits the threat or use of force against a state's territorial integrity or political independence. If an operation against a senior official is attributable to another state, it cannot be regarded merely as a security measure against an individual; its effect on interstate relations and the legal order must be examined. Article 51 recognizes self-defense in the event of an armed attack. Invoking it begins, rather than ends, the inquiry: Did such an attack occur? Is the danger continuing? Was the action necessary and proportionate? Can an expansive interpretation make any possible future threat a ground for force?
These questions have grown sharper as the United States and the Israeli regime have invoked “preemptive defense,” “imminent threat,” and “military necessity” to justify operations abroad. Without precise legal standards, the exception of self-defense could become a broad license for unilateral force by any state, contrary to the Charter's collective-security framework.
If an operation is connected to an armed conflict, international humanitarian law also applies. Political office alone does not make a person a lawful military target. Distinction, military necessity, and proportionality must be assessed in each case, alongside the person's legal status and actual role in the conflict, the nature of the operation, and effects on civilians.
Human rights law remains relevant. Article 6 of the International Covenant on Civil and Political Rights protects the right to life. The lawfulness of taking a life cannot be ignored even where force is used. The relationship between human rights and humanitarian law is consequently central to the analysis of targeted operations.
State responsibility may also arise. If an operation is attributable to a state and breaches an international obligation, cessation, reparation, and other legal consequences come into question. Responsibility does not stop with the individual who carried it out. Under Article 39 of the Charter, the Security Council determines whether a threat to peace, breach of peace, or act of aggression exists. This does not mean every targeted strike requires advance referral to the Council, but extensive unilateral force can affect collective security and international peace.
The targeting of senior Iranian officials deserves its own legal examination. Beyond political judgments, it raises the question of whether existing rules can meet new realities or leave serious gaps. The stakes reach beyond one person or state: normalization could turn political leaders into permanent targets, weaken the line between war and peace, and challenge sovereign equality.
The forthcoming book *Leaders in the Crosshairs* examines these issues through legal research. Its purpose is to ask what international law says about targeting senior officials, rather than to politically endorse a person, state, or operation. Where are the boundaries between self-defense and unlawful action, a military target and a political official, military necessity and arbitrary deprivation of life? The overlap with terrorism studies is clear: violence against symbolic political figures can be intended to affect far more than its immediate victim. The lines among targeted operations, counterterrorism measures, lawful force, and unlawful political violence are exceptionally difficult to draw.
Perhaps the most important question is not which leader is in the crosshairs, but who may decide to put a leader there and under what legal rule. The answer tests the international rule of law. If power replaces rules, boundaries between war and peace, security and revenge, and lawful action and violations of international law become harder to maintain.
By Dr. Seyed Mohsen Mostafavi, senior terrorism specialist and university lecturer