This Book is written for Project Managers and Engineers, for Sales Managers and Project Planners, for Top Executives and Managers of the Legal Department of a company as from the client's as also from the contractor's side. Finally it is for students of the mentioned disciplines in their endeavour to become a leader in their respective fields and not to reproduce mistakes that others have made before them. This book does not try to give legal advice, but it tries to help engineers and project managers how to solve difficult contract situations. Contract disagreements between the main parties in international projects evolving into conflicts seem to occur more often nowadays than before. This trend does not only damage the project in question but it also discredits the engineering and contracting industry with a number of negative consequences. The purpose of this handbook is to describe and analyze how disagreements and minor conflicts that are quite normal between the main contract players, should be handled. In major construction projects small conflicts can easily develop into important conflicts causing delays, overruns and insufficient quality. We give advice on how to avoid conflicts and how to solve them in order to mitigate the losses! All parties involved have this responsibility for the sake of their own results, for the sake of the reputation of the project industry and for the sake of their company. The book might help the parties to avoid or solve future conflicts earlier, thereby saving money for their projects, their companies and their society. This book consists of 10 chapters including the introduction to the subject and conclusions with our recommendations. Finally the book includes a glossary with an explanation of the main concepts and a list of literature. The content of the chapters are based on real project and conflict experiences collected by the three authors.