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Politics and International Relations (PIR): People


Leonhard den Hertog

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Leonhard den Hertog
Edinburgh UK
Dear vi­si­tor,

Wel­co­me to my per­so­nal web­page!

I in­vi­te an­yo­ne with ques­ti­ons or sug­ges­ti­ons on my work and ideas for fu­ture co­ope­ra­ti­on to con­tact me at:

Hope to hear from you,


Key Interests

    The Rule of Law
    EU external relations law; especially the role of constitutional principles
    EU Justice and Home Affairs policies; especially external dimension of migration policy/border policy
    EU development cooperation; especially EU's role in Ethiopia

My Bio

I ob­tained my LLM de­gree in 2010 after com­plet­ing the Legal Re­search Mas­ter at the Uni­versity of Utrecht. Du­ring my LLM stu­dies I car­ri­ed out re­se­arch pro­jects on inter alia Fron­tex (EU Bor­der Agen­cy) joint ope­ra­ti­ons in light of re­fu­gee and human rights law, the re­cep­ti­on of EU law in the Mem­ber Sta­tes' legal order and the prin­ciple of loyal co­ope­ra­ti­on wi­t­hin CFSP. Du­ring those years, I also worked as re­se­arch as­sis­tant for pro­fes­sors at the Uni­ver­si­ty of Ut­recht and of Ams­ter­dam on Eu­ropean con­sti­tu­tio­nal law and worked for an Ams­ter­dam-ba­sed law firm as par­a­le­gal on Eu­ropean law. Fur­ther­mo­re I in­ter­ned at a civil so­cie­ty pro­ject (Co­to­nou Task Force) on EU de­ve­lop­ment po­li­cy in Addis Ababa (Ethio­pia) fun­ded by the local EC De­le­ga­ti­on.

Since Oc­to­ber 2010 I am a PhD stu­dent within the EXACT pro­gramme. My joint host uni­versit­ies within this net­work are the Uni­versity of Co­logne and of Ed­in­burgh. From March to Oc­to­ber 2011 I was based at the Centre for European Policy Stud­ies (CEPS) in Brus­sels where I worked within the Justice and Home Af­fairs (JHA) unit; there I dealt mainly with Fron­tex and EU bor­der policy. Sub­sequently, I worked 5 months at the Hun­garian Academy of Sci­ences in Bud­apest, deal­ing mostly with EU's in­ter­na­tional re­spons­ib­il­ity and the Rule of Law. Cur­rently I am based at the Uni­versity of Co­logne's Jean Mon­net Chair, com­bined with reg­u­lar shorter stays at the Uni­versity of Ed­in­burgh.

Please do not hes­it­ate to con­tact me if you have sim­ilar re­search in­terests; I am look­ing for­ward to an ex­change of ideas on these mat­ters.

EXACT stages
October 2010 - February 2011     University of Cologne
March 2011 - October 2011     The Centre for European Policy Studies (CEPS), Brussels
November 2011 - March 2012     Hungarian Academy of Sciences (HAS), Budapest
April 2012 - September 2013     University of Cologne / Edinburgh


PhD research project

Title of re­se­arch pro­ject: 'EU's ex­ter­nal di­men­si­on of mi­gra­ti­on po­li­cy: or­ga­ni­sa­tio­nal

dy­na­mics and con­sti­tu­tio­nal prin­ci­ples'


Su­per­vi­sors: Prof. Wolf­gang Wes­sels (Uni­ver­si­ty of Co­lo­gne) & Prof. Chris­ti­na Bos­well

(Uni­ver­si­ty of Edin­burgh)


Over the past de­ca­de the EU and its Mem­ber Sta­tes have given in­cre­a­sing prio­ri­ty to the de­ve­lop­ment of an ex­ter­nal di­men­si­on of mi­gra­ti­on po­li­cy. This re­la­tive­ly new field of EU ex­ter­nal re­la­ti­ons de­ve­l­o­ped from in­ter­nal po­li­cies wi­t­hin the realm of Home Af­fairs. Mea­su­res such as re­ad­mis­si­on agree­ments, ex­tra­ter­ri­to­ri­al bor­der con­trol and visa fa­ci­li­ta­ti­on have been pro­mo­ted in that con­text. The field is still sen­si­ti­ve from a sover­eig­n­ty point of view but goes through con­ti­nuous trans­for­ma­ti­on and ex­pan­si­on. This study ana­ly­ses the or­ga­ni­sa­tio­nal dy­na­mics in this field in con­nec­tion to the role that con­sti­tu­tio­nal prin­ci­ples play in shaping ac­tors' pre­fe­ren­ces and ac­tions. The theo­re­ti­cal foun­da­ti­ons of the study lie in or­ga­ni­sa­ti­ons theo­ry, spe­ci­fi­cal­ly as de­ve­l­o­ped by Swe­dish theo­rist Nils Bruns­son.

The study ana­ly­ses three or­ga­ni­sa­ti­ons: 1) Eu­ropean Com­mis­si­on's Di­rec­to­ra­te-Ge­ne­ral Home Af­fairs, 2) Ex­ter­nal Bor­der Agen­cy Fron­tex and 3) the Eu­ropean Ex­ter­nal Ac­tion Ser­vice. They con­sti­tu­te the most es­sen­ti­al EU level or­ga­ni­sa­ti­ons in the ex­ter­nal di­men­si­on of mi­gra­ti­on po­li­cy. To un­der­stand how con­sti­tu­tio­nal prin­ci­ples be­co­me re­le­vant for those or­ga­ni­sa­ti­ons, em­pha­sis is given to the en­vi­ron­ments in which these or­ga­ni­sa­ti­ons ope­ra­te and their in­ter­nal struc­tu­res and cul­tu­res. Spe­ci­fi­cal­ly, the Rule of Law is taken to il­lus­tra­te the way in which these or­ga­ni­sa­ti­ons deal with con­sti­tu­tio­nal prin­ci­ples.

Howe­ver, this is all work in pro­gress, so any input is wel­co­me!   

Academic Activities


    Presentation of paper 'The specific nature of EU Home Affairs Agencies: beyond accountability versus autonomy?' (co-presented with Joanna Parkin) at the UACES Annual Conference (Passau), September 2012

    Presentation of paper 'Constitutional principles and their role of legitimation in EU external relations - an organisations theory approach' at the ISA/BISA Conference (Edinburgh), June 2012

    Presentation of paper 'EU Foreign, Security and Defence Policy: a Competence-Responsibility Gap?' at the Hebrew University (Jerusalem) Graduate Conference, December 2011

    Presentation of paper 'Revolution and war at Europe's doorstep and the migratory consequences - implications for the external dimension of migration' at the Finnish Institute for International Affairs (Helsinki) seminar on 'The EU and its neighbours', September 2011

    Presentation of paper 'Revolutions and their migrants: EU's solidarity and fundamental rights' at University of Surrey (Guildford) UACES conference on 'New frontiers in European Studies', June 2011. Click here for a UACES podcast interview with me on the subject.

    Presentation of paper 'Policy Coherence in the EU System - concepts and legal rooting of an ambiguous term', with Simon Stross, at CEU Universidad San Pablo (Madrid) conference on 'EU as a global power', April 2011.

    Presentation of paper 'Fundamental rights and the extraterritorialisation of EU border policy - a contradiction in terms?' at CEPS (Brussels) EU-Canada training school on 'The reframing of the EU external border - risk, ethnicity and nationality', February 2011



    L. den Hertog, 'Fundamental Rights and the Extra-Territorialisation of EU Border Policy: a Contradiction in Terms?', in: D.Bigo, S. Carrera and E. Guild (eds.), Foreigners, Refugees or Minorities? Rethinking People in the Context of Border Controls and Visas (Ashgate), January 2013.

    S. Carrera, L. den Hertog and J. Parkin, 'EU migration policy in the wake of the Arab Spring: what prospects for EU-Southern Mediterranean relations?', MedPro Technical Papers, No. 15, August 2012.

    L. den Hertog, 'Two Boats in the Mediterranean and their Unfortunate Encounters with Europe's Policies towards People on the Move', CEPS Papers in Liberty and Security in Europe, No. 48, July 2012.

    L. den Hertog, 'The Rule of Law in the EU: Understandings, Development and Challenges', Acta Juridica Hungarica, 3/2012.

    L. den Hertog and R.A. Wessel, 'EU Foreign, Security and Defence Policy: a Competence-Responsibility Gap?', in: M. Evans and P. Koutrakos (eds.), International Responsibility: EU and International Perspectives (Oxford, Hart Publishing), forthcoming 2012

    S. Carrera, E. Guild, L. den Hertog and J. Parkin, Implementation of the EU Charter of Fundamental Rights and its impact on EU Home Affairs Agencies - Frontex, Europol and the European Asylum Support Office, EP Study (Citizen's rights and constitutional affairs), August 2011



    Teaching at University of Cologne of seminar on European Politics 'EU external relations - with special focus on EU-Africa relations' together with EXACT Fellow James Nyomakwa-Obimpeh (April - July 2012).

    Guest lecture at Széchenyi István University (Gÿor, Hungary) on 'the Rule of Law in the EU' in the course of prof. B. Horvathy (March 2012).

    Guest lecture at ELTE University (Budapest) on 'EU Border Policy, Human Rights and Refugees in the Mediterranean Sea' in the Erasmus course of L. Balogh on 'Law and Ethnicity: From the Dilemma of Ethnic Identity-Formation to the Morphology of Minority Protection' (November 2011).

    Two guest lectures at the Ethiopian Civil Service College (Addis Ababa) on 'Legal Philosophy' in the course of prof. Kundidzora on the same topic (October 2009).



    Participation in 2-week EXACT Network Seminar on Academic Skills at the University of Cologne supervised by Prof. G. Edwards (University of Cambridge) and Dr. R. Kissack (Institut Barcelona d'Estudis Internacionals). Covered skills include: teaching, presenting, using theoretical and methodological approaches, publishing etc., September 2012

    Participation in 1-week course 'Content Analysis' (lecturer: A. Bicquelet, London School of Economics) in the ECPR Summer School on Methods and Techniques at the University of Ljubljana, August 2012.

    Participation in 2-week EXACT Network Seminar on Professional Skills at TEPSA (Brussels) supervised by Prof. H. Ojanen (University of Helsinki/Finnish Institute of International Affairs). Covered skills include: media training, public speaking, funding opportunities, project administration, management and coordination, interviewing and op-ed and policy brief writing, October 2011.