“Outside of the Bible, no book has had a greater practical impact on my personal prayer life than Operation World. God has used this book to open my eyes and the eyes of the church I pastor to the needs of the world and the greatness of the God who desires to make His glory known in the world. I eagerly welcome this new edition and wholeheartedly recommend it.”
- David Platt, Senior Pastor, The Church at Brook Hills, Birmingham, AL, and author of the New York Times best-seller Radical: Taking Back Your Faith from the American Dream

“Operation World is an 'out of the stands and onto the playing field' kind of book. Other than Scripture, Operation World has the potential to have the greatest impact on the life of a believer of any book ever published. It uniquely reveals the heart-throb of God for the world and His unfolding drama of redeeming followers of Jesus from every tribe, tongue, nation and people. Be prepared for a radical transformation in how you view the world and your Christian life!”
- Daniel Scribner, Director, Joshua Project

“For years I have use the Operation World to pray for people in every tongue, tribe and nation. Operation World is a time honored and well tested global manual of prayer which will provide for you everything you need to bring the nations of the world before the throne of God. It will expand your heart, vision and passion for the peoples of the world and God’s deep desire to reach those in the darkest corners with His help and hope.”
- Joni Eareckson Tada, Author/Speaker

“In the world of missions, I know of nothing more significant than Operation World, when it comes to learning about the need, opportunity and prayer points for world evangelism. Here is your bridge to walk into every continent, nation, community and touch them with your prayers and commitment. In my 44 years of involvement in world missions, the information from Operation World gave me understanding and motivation to pray and do what I could to fulfill the desire of God’s heart to reach the untold millions. Next to your Bible, Operation World will be the most important book you will own. Go nowhere without it. Pray daily, sharing the burden of our Lord.”
- Dr. K.P. Yohannan, International Director, Gospel for Asia

“Operation World continues to be the most informative, visionary prayer guide to missions throughout the world today. It helps believers everywhere to expand their vision and pray knowledgeably about the critical needs in every country. It is making a tremendous contribution to the fulfillment of the Great commission.”
- Paul Eshleman, Vice President, Campus Crusade for Christ International, Director, Finishing the Task Network

“I have been involved with this book for over 35 years as a part of my spiritual DNA. A few words come to mind, first of all ‘information’ a wealth of information. Secondly ‘vision’, this book is going to help you increase your vision for the people of the world and for how God is working across the world. Third ‘prayer’, it’s going to help you in your ministry of prayer. A lot of people have told me how this book has completely changed their view point and their way of life through prayer. This is probably one of the most important missionary tools in the entire history of missions.”
- George Verwer, founder of Operation Mobilization and World Missions Advocate

“In my opinion the greatest contribution to effective intercession for the nations ever published is Operation World. This comprehensive guide is the first source our ministry goes to in gathering information for practical, focused, intercessory prayer for what God is doing globally. There is simply nothing comparable. To pray through this fact-filled guide annually is to become a true missionary of prayer to the nations of the world!”
- Dr. Dick Eastman, International President, Every Home for Christ

“Operation World has been one of the greatest tools for prayer mobilization for our world ever since it was first published. The scope and thoroughness of the research done by Jason Mandryk and his colleagues is truly commendable.”
- Dr. Joseph D'souza, President of the Dalit Freedom Network

“In my opinion, Operation World is the premier publication available for reliable statistics. Without fail, I have my students refer to this invaluable resource as they prepare their country profiles.”
- Phil Parshall, SIM-USA, Missionary at Large

“Operation World changed our lives! In 1999, my wife and I began praying for a country each night in Operation World. God opened our hearts wide for lost people especially in the Middle East. Every night as we would read about Iran, Israel and other nations, our hearts were gripped with the need to reach these countries for Christ. Within two years, God called us to leave senior pastoring a local church in the Colorado Springs area and to go to the very places that we had been praying for!  So as you pray through Operation World, just remember, God may radically change your world to reach His world.”
- Tom and JoAnn Doyle, e3 Partners, Middle East-Central Asia

“Operation World, since its inception, has been a great gift to God's global church. It offers a clear concise update on the state of each country in the world with some helpful prayer points. It is a wonderful resource which has been widely used among university students around the world and has been a great means of increasing their global awareness. I use it myself. It is an invaluable resource. It is one of the best resources I know to enable pastors and Christian leaders to help those in their care to become better informed and, as a result, engaged in contributing to taking the gospel to the ends of the earth by praying, supporting or going.”
- Lindsay Brown, International Director, Lausanne Committee for World Evangelization

“This longstanding and trusted resource cuts through the fog to provide an up-to-date snap-shot of what in the world God is doing among the peoples. Operation World will become one of your most valuable books for understanding the nations and how to pray for them! Get it, but don't shelve it. Use it!”
- J. D. Payne, national missionary, North American Mission Board; Associate Professor of Church Planting and Evangelism, The Southern Baptist Theological Seminary, Louisville, KK

“Operation World is a tremendously useful resource that I use personally, with my family and in my ministry. No Christian family, local church library, Christian leader should be without this vision building, prayer enhancing, information packed tool.”
- Rev. Dr. Geoff Tunnicliffe, CEO/Secretary General, World Evangelical Alliance

“In six passages, the scriptures are clear: Christ won't come back until all nations (ethnic groups) are reached.  If you cherish Christ and his return, get to know the nations and focus your prayer and efforts on redeeming them for His kingdom.  The best way to begin this process is through Operation World! ”
- Bob Sjogren, President, UnveilinGLORY

“Operation World is one of the most important Christian books in the world because it mobilises the church to reliably informed intercession. As a long-haired student I kept a previous edition by my bedside and prayed through almost every nation. Today, I recommend Operation World wherever I go. Jason Mandryk and his team have done the Body of Christ a great service through years of research, analysis and impressive attention to detail. Just as generals need military intelligence and doctors check the pulse, so pastors, missionaries and intercessors will want this latest edition of Operation World on their bookshelves. Or better still - beside their beds.”
- Pete Greig, 24-7 Prayer & Alpha International

“The day after I became a Christian in the 1980s, the friend who led me to Christ took me to a bookstore and bought two books for me - The Bible and Operation World. The Scriptures helped me gain God's heart for the nations, and Operation World helped focus my life on where and how I could strategically serve Him. Later we founded a ministry and have produced a number of books profiling Asia's unreached people groups. The Body of Christ owes much to Jason and his team for their hard work. I am glad to endorse Operation World to all believers who are interested in seeing the Great Commission completed and the Name of Jesus glorified throughout the earth.”
- Paul Hattaway, Author and Director of Asia Harvest

“As a producer of reference works on global Christianity that usually are destined for library collections, I greatly anticipate the arrival of a new edition of Operation World. It provides an affordable, compact, and portable guide to the world while maintaining high standards for research and carefully-crafted analysis as a backdrop for prayer. Enthusiastically recommended!”
- Todd M. Johnson, Center for the Study of Global Christianity, Gordon-Conwell Theological Seminary

“For decades, Operation World has been the most significant book in the global missions’ movement. This edition continues that unparalleled tradition. Read this volume with an open heart. You will learn spiritual intelligence on what God is doing around the globe. More than that, however, pray through this book. You will be a partner with the Lord in advancing his kingdom against all the powers of darkness.”
- Stan Guthrie Editor at large, Christianity Today, and author, Missions in the Third Millennium and All That Jesus Asks

“No other tool has impacted WEC as a mission agency more than Operation World. The data has guided our strategies and new advances, and the prayers stimulated by this resource have been God’s tool to bring transformation into lives and people groups. God has truly used Operation World to shape us as a mission and to change the world.”
- Louis Sutton, International Director Elect, WEC International

“I am honored to commend Operation World to all Christians everywhere, who believe we must pray for the harvest! Each week we hold a global prayer focusing on a nation of the world. We therefore pray through the world every 4 years. Operation World is our text, bringing clarity to our prayers and vision for the task to take the gospel to all nations!”
- Lon Allison, D.Min, Executive Director, Billy Graham Center, Wheaton College USA

“Operation World is incendiary. The information is solid and engaging. But what may surprise you is the sense of anticipation that God really is advancing and fulfilling His purposes in every people and place. That spark of hope makes it easy to escape the boredom of your own concerns and pray with sincerity and clarity for distant lands and peoples. It’s like building a fire with wood already soaked in gasoline.”
- Steve Hawthorne, Co-Editor, Perspectives on the World Christian Movement

“In the 1960s, my mother bought me a globe. It is sitting behind my desk today. Thanks to our family focus on mission work, I felt called to missions when I was about 13 years old. As I turn my globe around today, I notice several country names have changed since the globe was made. Though some country names have changed, my passion for God has remained the same. And the people of the world still need salvation.

In our ministry, we are constantly urging our readers to pray, because we know the power of prayer. I think of my mother, who prayed for me as I sat in a Cuban prison cell, I think of the Native American woman who prayed three days for a VOM team member under fire in Sudan, and I think of the many thousands of people who prayed for and encouraged Sandul Bibi while she was imprisoned in Pakistan. Prayer is a lifeline for our Christian family overseas.

For many years, VOM has relied on Operation World’s meticulously researched information in our efforts to help persecuted believers and motivate Christians in America to pray. Each year we release a Global Report on hostile and restricted nations around the world, and we know we can rely on the statistics provided in Operation World.

Operation World provides detailed, first-rate information that is not readily available elsewhere. This information is invaluable for understanding the circumstances of Christians around the world and for praying in a more focused manner for specific situations. I am grateful for people who pray for the nations. It is my privilege to recommend the 2010 edition of Operation World. I hope it will encourage you to continue praying for God’s work around the world.”
- Tom White, Executive Director, Voice of the Martyrs

“Only in heaven will we known the affect that prayer has had in speeding the work of world evangelization. We may discover that it was the most powerful force exerted by the church in making a difference in this world. But to pray powerfully we must be informed. Throughout modern missions innovative Christians have found ways to inform people praying for the world. Few have been as effective and useful as Operation World. I am so happy that a new edition is being released.”
- Ajith Fernando, National Director, Youth for Christ Sri Lanka

“Ralph Winter had said ‘God cannot lead you on the basis of facts you do not know.’ I would suggest the same can be said about prayer for the nations. OW is a powerful prayer-guide-and-encyclopedia-in-one that helps believers to pray strategically and effectively for the nations.”

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“Knowledgeable, strategic prayers are like laser-guided missiles that first pass the throne of God, and eventually hit their mark. Operation World is the GPS that helps us know how to specifically direct our prayers.”

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“Call me selfish, but I like the idea of being educated about a country, so I know how I can best pray for that country. Operation World is a key component in helping me pray strategically for the nations.”

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“Operation World is for people who are not content with simple ‘bless the nations’ prayers. It provides helpful information so believers can pray strategically for key issues and concerns of a nation.”
- Dave Flynn, National Director, Perspectives Study Program

“Operation World has remained a veritable source of mission information about the status of the remaining task, and a tool that brings together in one volume a detailed update that inspires passion for the unreached and stirs up hearts to intercede. There are also illustrations and stories which proffer transferable strategies and techniques for engaging the task as well as highlight strategic networking patterns. The previous editions have been both mission handbook and missiological compass which had contributed immensely in advancing the cause of missions especially in the global south. I am very much expectant about greater impact from this current edition and therefore strongly recommend it to the seriously minded mission community.”
- Reuben Ezemadu International Director, Christian Missionary Foundation (CMF); Continental Coordinator, Movement for African National Initiatives

“I am delighted to commend the new edition of Operation World after much work by the totally dedicated Jason Mandryk and his hard working team with newer insights, fresh facts and up-to-date information of the world to fuel prayer and plan the way forward in missions. I associate my own zeal for world prayer and missional growth to my involvement with the Operation World project since the early 80s. OW has became a very special, most used, effective authentic encyclopedic referring tool for even the newly born first-generation churches to become World Christians. OW has conscientized, prompted all missional followers of Christ, drawing them out of parochialism to envision the world with a new passion and strategy to communicate the Gospel to the globalised lost world to follow Christ. OW birthed many mission movements by its passionate appeal and correct information. I warmly appreciate and recommend this new Operation World to move us forward with the Gospel afresh across the globe more than ever. May you be a changed person after using the new OW to proclaim the Good News of the Savior, the Lord Jesus Christ.”
- Dr. K. Rajendran, General Secretary, India Missions Association and Chairman, World Evangelical Alliance Mission Commission

“Few documents combine the awesome effect of touching individuals, movements and nations. Operation World has also changed the way the Church in Africa, especially IFES students prays for the world and its people. By facilitating global intercession Operation World has contributed immensely in provoking a global vision for the world-wide Church. This all-important fuel-for-prayer document has no doubt helped many, including my family and I, to pray for the world in an informed and innovative manner. Do not miss the opportunity to change the world through transformational prayer - OW provides an excellent road-map.”
- Revd Gideon Para-Mallam Regional Secretary IFES & LCWE International Deputy Director for English and Portuguese Speaking Africa