Dill, Janina

Dr Janina Dill  


Position held

Assistant Professor


Non LSE positions held

Research Associate Oxford Institute for Ethics, Law and Armed Conflict


Principia Advisory SARL

Senior Associate


Experience keywords:

Air Warfare; Changing Character of War; Just War Theory; Laws of war; Morality of War; international humanitarian law; international relations theory

Research summary > [Click to expand]

My research focuses on international law and ethics in war. I currently work on the legality and moral implications of collateral damage caused by air strikes and ground operations. I investigate in particular the development of US air warfare, contemporary counterinsurgency operations in Afghanistan, and Israeli military practices. My book 'Legitimate Targets?' offers an innovative theory of international law. It investigates the effectiveness of international humanitarian law (IHL) in regulating the conduct of warfare. Through a comprehensive examination of the IHL defining a legitimate target of attack it reveals a controversy among legal and military professionals about the 'logic' according to which belligerents ought to balance humanitarian and military imperatives: the logics of sufficiency or efficiency. Law prescribes the former, but increased recourse to international law in US air warfare has led to targeting in accordance with the logic of efficiency. The logic of sufficiency is morally less problematic, yet neither logic satisfies contemporary expectations of effective IHL or legitimate warfare.

Sectors and industries to which research relates:

Consultancy; Law


German [Spoken: Fluent, Written: Fluent]

Media experience:

Has written for mainstream press

Contact Points

LSE email:


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Dill, Janina (2017) Abuse of law on the 21st century battlefield: a typology of lawfare In: Gross, Michael and Meisels, Tamar, (eds.) The Ethic of Soft War. Cambridge University Press, New York, USA.


Dill, Janina (2016) The DoD law of war manual and the false appeal of differentiating types of civilians Just Security (1 Dec 2016) Blog entry

Dill, Janina (2016) Five ‘don’ts’ for introducing a female speaker Duck of Minerva (10 May 2016) Blog entry

Dill, Janina (2016) Assessing proportionality: an unreasonable demand on the reasonable commander? Intercross Blog (11 Oct 2016) Blog entry

Dill, Janina (2016) Forcible alternatives to war In: Ohlin, Jens David, (ed.) Theoretical Boundaries of Armed Conflict and Human Rights. ASIL Studies in International Legal Theory. Cambridge University Press, New York, USA, 289-314. ISBN 9781107137936


Dill, Janina (2015) The Janus faced nature of international war and law Inspires, 2015 (24 Jun 2015) Website

Dill, Janina (2015) Ending wars: the jus ad bellum principles suspended, repeated, or adjusted? Ethics, 125 (3). 627-630. ISSN 0014-1704

Dill, Janina (2015) The informal regulation of drones and the formal legal regulation of war Ethics and International Affairs, 29 (1). 51-58. ISSN 0892-6794

Dill, Janina (2015) "Proportionate" collateral damage and why we should care about what civilians think Just Security (27 Mar 2015) Blog entry

Dill, Janina (2015) Legitimate targets? Social construction, international law and US bombing Cambridge Studies in International Relations (133). Cambridge University Press, Cambridge, UK. ISBN 9781107056756

Dill, Janina (2015) The 21st-century belligerent’s trilemma European Journal of International Law, 26 (1). 83-108. ISSN 0938-5428


Dill, Janina (2014) Guest post: Israel’s use of law and warnings in Gaza Opinio Juris (30 Jul 2014) Blog entry

Dill, Janina (2014) The American way of bombing and international law: two logics of warfare in tension In: Evangelista, Matthew and Shue, Henry, (eds.) The American Way of Bombing: Changing Ethical and Legal Norms, from Flying Fortresses to Drones. Cornell University Press, Ithaca, USA, 131-144. ISBN 9780801452802


Dill, Janina (2013) Should international law ensure the moral acceptability of war? Leiden Journal of International Law, 26 (2). 253-270. ISSN 0922-1565


Dill, Janina and Shue, Henry (2012) Limiting the killing in war: military necessity and the St. Petersburg assumption Ethics and International Affairs, 26 (3). 311-333. ISSN 0892-6794


Dill, Janina (2011) Puntland's declaration of autonomy and Somaliland's secession: two quests for self-governance in a failed state In: Weller, Marc and Nobbs, Katherine, (eds.) Asymmetric Autonomy and the Settlement of Ethnic Conflicts. National and Ethnic Conflict in the 21st Century. University of Pennsylvania Press, Philadelphia, USA, 278-297. ISBN 9780812222388


Dill, Janina (2010) Applying the principle of proportionality in combat operations Policy Briefs and Working Papers, Oxford Institute for Ethics, Law, and Armed Conflict, University of Oxford, Oxford, UK.

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Personal website


Runner-up Birk’s Prize for Outstanding Legal Scholarship, Society of Legal Scholars (2016); Shortlisted for an Innovation in Teaching Award, Oxford University Student Union (2013); Lord Bryce Prize for the Best Dissertation in IR/Comparative Studies, Political Studies Association (2012); Dasturzada Dr Jal Pavry Memorial Prize for an Outstanding Thesis in the Area of International Peace and Understanding, University of Oxford (2012).

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