Policy Press

NATO’s Northern Enlargement

Finland and Sweden’s Path to Membership

By Tuomas Forsberg and Magnus Christiansson

Published

1 Apr 2025

Page count

192 pages

ISBN

978-1529245059

Dimensions

203 x 127 mm

Imprint

Bristol University Press
This book, written by leading experts on European defence, analyses NATO’s northern expansion, detailing the unique dynamics that forged Finland and Sweden’s path to NATO membership.

Tuomas Forsberg is Professor of International Relations at Tampere University, Finland.

Magnus Christiansson is Assistant Professor of War Studies at the Swedish Defence University.

1. Introduction

2. Drivers of NATO Enlargement

3. Finland exercises its “NATO option”

4. Sweden’s historical decision on NATO

5. The Alliance and the Accession Process

6. Finland and Sweden in NATO

7. NATO after the Northern Enlargement

8. Conclusions