Operation World is a reference book and prayer guide, begun by Patrick Johnstone and continued by Jason Mandryk, both from WEC International, a Christian mission agency. The first edition was published by Dorothea Mission, later editions by Send the Light, publishing branch of Operation Mobilisation (OM). The latest edition of Operation World was published by Biblica, but is now distributed by InterVarsity Press (IVP) after IVP acquired the publishing arm of Biblica in late 2011. Operation World content has been made available online. It is aimed at informing Christians about every country in the world in order to encourage the church to pray for the world and to engage the world in Christian mission. This resource refers to itself as being written from a broadly evangelical Christian perspective. Source: Wikipedia (en)