To an extent that may surprise many, international arbitral proceedings are prone to serious interference from the obstructive or even criminal behaviour of interested 'stakeholders'. Numerous anecdotes involving not only bribery and subornation but also actual violent threats of retaliation have emerged since the editors of this book addressed an audience at the Vienna Arbitration Days 2010, at which time they used the popular term guerrilla - denoting such tactics as ambushes, sabotage, and intimidation - to evoke their topic, and called for effective means to combat this undermining of the integrity and popularity of international arbitration. Their call bore fruit, and this collection of contributions by a wide spread of seasoned arbitration practitioners - the driving forces in their field - as well as leading academics with distinguished backgrounds and reputations bears powerful witness to the importance of the subject.