In 1999, the Alliance mistakenly bombed the Chinese embassy in Belgrade. Around the same period, allegations were made regarding its involvement in human trafficking and forced prostitution in Bosnia-Herzegovina. A decade later, NATO airplanes hit a fuel truck causing significant civilian casualties in Kunduz, Afghanistan. After more than 60 years of existence and a track-record of more than 30 missions performed worldwide, it is surprising that there is still uncertainty on the scope and content of NATO’s responsibility for wrongful conduct during its military operations. This timely book deals with the international responsibility of NATO during military operations. It examines the status of the Alliance, the existence of international obligations and conditions of attribution of conduct in NATO.