International HRM involves managing human resources across multiple countries. It includes activities like staffing, recruitment, expatriate management, training, performance management, and compensation. Managing international human resources presents additional challenges compared to domestic HRM, such as increased risks, regulatory complexities, and managing cultural differences. The key aspects of international HRM are staffing, recruitment and selection of expatriates, managing expatriate adjustment, training employees across cultures, performance management of expatriates, developing compensation packages, and adhering to different regulatory frameworks across countries.