Six qualitative studies were conducted to gain support and guidance in incorporating internationalization into the curriculum for Swedish undergraduate nursing education in accordance with official guidelines. In studies 1 and 2, practitioners and experts were interviewed, and in studies 3 and 4, nursing education programs were observed from the participant and student perspectives. A didactic strategy for internationalizing the undergraduate nursing education curriculum was developed after an analysis of the findings of the four studies. In the action research constituting study 5, the didactic strategy's applicability within the existing framework for Swedish undergraduate nursing education was assessed. Study 6 was a complementary study to confirm the results of the first five studies. The combined analysis of the six studies established that interpreting and implementing internationalization for undergraduate nursing education is a complex process entailing intercultural communication and making student nurses aware of their private and professional roles in resolving health-related global issues. (Appended are letters pertaining to studies 1 and 2 and the following items pertaining to study 5: World Health Organization definition of health underpinning the action research; checklist to measure student attitudes; and notes regarding planning and organizing various action research activities. The bibliography contains 563 references.) (MN)