The book contains an analysis of the OSCE in all three dimensions, the approach of the Organization in addressing modern challenges and threats, reflects the role of the Republic of Tajikistan in the OSCE regional security system, and also includes some material about the Summits of Heads of States and Governments of OSCE participating States, OSCE Ministerial Council, etc. The materials presented in this book cover the period of cooperation between the Republic of Tajikistan and the OSCE from 1991 to 2011. For a wide range of readers.