Knowledge is power. In the hands of UN peacekeepers, it can be a power for peace. Lacking knowledge, peacekeepers often find themselves powerless in the field, unable to protect themselves and others. The United Nations owes it to its peacekeepers and the “peacekept” to utilize modern tools to make its monitoring and surveillance effective. In his new book, Keeping Watch, Professor Dorn explains how technology can increase the range, effectiveness and accuracy of UN observation. The unaided UN military observer with the "mark one eyeball" can observe little. Satellites, aircraft and ground sensors cover wider areas over longer periods of time, while decreasing intrusiveness. Yet, in addition to the numerous benefits of technology for UN Peace Operations, Dorn also outlines the potential problems and pitfalls with modern technologies and the challenges of incorporating them into the UN system.