<p>This book presents the proceedings of the fourth U.S.-Russian interacademy workshop on the general theme of countering terrorism, which was held in Moscow in March 2007. The fourth in a series, this volume continues to explore topics related to urban terrorism, but with a new emphasis on potential attacks involving biological agents, transportation networks, and energy systems.</p> <p>The other books in the series include:</p> <ul> <li>High Impact Terrorism: Proceedings of a Russian-American Workshop (2002)</li> <li><a href="http://www.nap.edu/catalog.php?record_id=10968">Terrorism: Reducing Vulnerabilities and Improving Responses: U.S.-Russian Workshop Proceedings</a> (2004)</li> <li><a href="http://www.nap.edu/catalog.php?record_id=11698">Countering Urban Terrorism in Russia and the United States: Proceedings of a Workshop</a> (2006)</li> </ul>