The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Ius Gentium Association (the Finnish Society of International Law) by Hart Publishing. Earlier volumes may be obtained from Martinus Nijhoff, an imprint of Brill Publishers. Further information may be found at www.fybil.org INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 19 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/fyil/subs

The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Ius Gentium Association (the Finnish Society of International Law) by Hart Publishing. Further information may be found at www.fybil.org INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 20 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/fyil/subs

The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Ius Gentium Association (the Finnish Society of International Law) by Hart Publishing. Earlier volumes may be obtained from Martinus Nijhoff, an imprint of Brill Publishers. Further information may be found at www.fybil.org INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 21 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/fyil/subs

The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Ius Gentium Association (the Finnish Society of International Law) by Hart Publishing. Earlier volumes may be obtained from Martinus Nijhoff, an imprint of Brill Publishers. Further information may be found at www.fybil.org INDIVIDUAL CHAPTERS Please click on the link below to purchase individual chapters from Volume 22 through Ingenta Connect: www.ingentaconnect.com SUBSCRIPTION TO SERIES To place an annual online subscription or a print standing order through Hart Publishing please click on the link below. Please note that any customers who have a standing order for the printed volumes will now be entitled to free online access. www.hartjournals.co.uk/fyil/subs

The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Finnish Society of International Law by Hart Publishing. Earlier volumes may be obtained from Martinus Nijhoff, an imprint of Brill Publishers. Further information may be found at www.fsil.fi/fybil

The Finnish Yearbook of International Law aspires to honour and strengthen the Finnish tradition in international legal scholarship. Open to contributions from all over the world and from all persuasions, the Finnish Yearbook stands out as a forum for theoretically informed, high-quality publications on all aspects of public international law, including the international relations law of the European Union. The Finnish Yearbook publishes in-depth articles and shorter notes, commentaries on current developments, book reviews and relevant overviews of Finland's state practice. While firmly grounded in traditional legal scholarship, it is open for new approaches to international law and for work of an interdisciplinary nature. The Finnish Yearbook is published for the Finnish Society of International Law by Hart Publishing. Volumes prior to volume 19 may be obtained from Martinus Nijhoff, an imprint of Brill Publishers.

This book offers a comprehensive study into the use of force and the maintenance of peace in international relations. Whilst rooted in public international law, it also approaches the question from different angles, including its historical evolution and its sociological environment. The competences and practice of the UN and of regional organizations in the maintenance of peace are examined before the focus is shifted to the inter-State level, the main non-use of force rule and its claimed or recognized exceptions. Robert Kolb analyzes each of these rules separately, before concluding with insightful reflections on the current state-of-play and considerations for the future of this branch of the law.