| Beyond al-Qaeda: Part 1, the global jihadist movement A Rabasa, P Chalk, K Cragin, SA Daly, HS Gregg Rand Corporation, 2002 | 194 | 2002 |
| After Saddam: Prewar planning and the occupation of Iraq N Bensahel, O Oliker, K Crane, R Richard Jr, HS Gregg Rand Corporation, 2008 | 145 | 2008 |
| Defining and distinguishing secular and religious terrorism HS Gregg Perspectives on Terrorism 8 (2), 36-51, 2014 | 86 | 2014 |
| The Middle East and the United States: History, Politics, and Ideologies DW Lesch, ML Haas Hachette UK, 2013 | 86 | 2013 |
| Divided they conquer: the success of Armenian ethnic lobbies in the United States HS Gregg Inter-University Committee on International Migration, 2002 | 73 | 2002 |
| Three theories of religious activism and violence: Social movements, fundamentalists, and apocalyptic warriors HS Gregg Terrorism and Political Violence 28 (2), 338-360, 2016 | 66 | 2016 |
| Fighting the jihad of the pen: Countering revolutionary Islam's ideology HS Gregg Terrorism and Political Violence 22 (2), 292-314, 2010 | 56 | 2010 |
| Beyond al-Qaeda: Part 2, the outer rings of the terrorist universe A Rabasa, P Chalk, K Cragin, SA Daly, HS Gregg Rand Corporation, 2002 | 55 | 2002 |
| The path to salvation: Religious violence from the crusades to Jihad HS Gregg Potomac Books, Inc., 2014 | 42 | 2014 |
| Handbook of US-Middle East Relations R Looney Routledge, 2014 | 36 | 2014 |
| Exploring religious conflict GF Treverton, HS Gregg, DK Gibran, CW Yost RAND, 2005 | 33 | 2005 |
| A Companion to Ronald Reagan AL Johns Wiley, 2015 | 32 | 2015 |
| Beyond population engagement: Understanding counterinsurgency HS Gregg The US Army War College Quarterly: Parameters 39 (3), 9, 2009 | 29 | 2009 |
| Fighting cosmic warriors: Lessons from the first seven years of the global war on terror HS Gregg Studies in Conflict & Terrorism 32 (3), 188-208, 2009 | 18 | 2009 |
| Crafting a better US grand strategy in the post-September 11 world: lessons from the early years of the Cold War HS Gregg Foreign Policy Analysis 6 (3), 237-255, 2010 | 17 | 2010 |
| Building the nation: Missed opportunities in Iraq and Afghanistan HS Gregg Potomac Books, 2018 | 15 | 2018 |
| The evolution of the Taliban SA Afsar, CA Samples, HS Gregg Naval Postgraduate School, 2008 | 14 | 2008 |
| Beyond al-Qaeda: Part 1, The Global Jihadist Movement SA Daly, P Chalk, W Rosenau, HS Gregg, A Rabasa, KA O'Brien, ... RAND Corporation, 2006 | 10 | 2006 |
| Setting a place at the table: ending insurgencies through the political process HS Gregg Small Wars & Insurgencies 22 (4), 644-668, 2011 | 9 | 2011 |
| The three circles of war: Understanding the dynamics of conflict in Iraq H Gregg, HS Rothstein, J Arquilla Potomac Books, Inc., 2010 | 8 | 2010 |
