This document discusses various types of international organizations and concepts in international human resource management (IHRM). It defines international, multinational, global, and transnational organizations and their characteristics. It also discusses staffing approaches like ethnocentric, polycentric, geocentric, and regiocentric policies. Additionally, it covers challenges in IHRM like managing cultural differences, performance appraisal of expatriates, international compensation management, and repatriation issues.