From the very first point at which cracks began to show in the Berlin Wall, Chris Donnelly was on the front-line of engineering NATO's response to the geopolitical challenges that the 1990s brought to the Alliance. Serving no less than four NATO Secretary Generals as Special Adviser for Central and Eastern Europe, he helped to bring former enemies into the Atlantic community and to make their security establishments better serve the modern threats all nations now face in the post-Cold War world. This volume represents his thinking on the core issues faced by the European defence and security community during those years and today. Having read it, the readers will likely agree with Lord Robertson, former Secretary General of NATO that "Chris has had a huge impact on the democratisation and normalisation of the 'new' Europe. Many people have good cause to be grateful to him."