Statement 1: There are total 57 states from Europe, Central Asia and America. This is correct. The Organization for Security and Cooperation in Europe (OSCE) is indeed the world's largest security-oriented intergovernmental organization, with 57 participating states from Europe, Central Asia, and North America. Statement 2: It offers a forum for political negotiations and decision-making in the field of early warning, conflict prevention, crisis management and post-conflict rehabilitation. This is correct. These functions are central to the OSCE's comprehensive approach to security, covering the politico-military, economic-environmental, and human dimensions. Statement 3: OSCE has the primary responsibility of providing military security in the European Region. This is incorrect. NATO (North Atlantic Treaty Organization) is the primary military alliance responsible for collective defense in the Euro-Atlantic area. The OSCE's role in the politico-military dimension focuses more on arms control, confidence-building measures, and border management, not primary military security provision. Statement 4: The decisions of OSCE are legally binding. This is incorrect. Decisions in the OSCE are taken by consensus among all participating states and are politically binding, not legally binding under international law.