Findings from international research as well as fromSwedenshow that breastfeeding is important for infant health. Further there are still needs to continuously invest on the society level to promote the breastfeeding. Working together in international research collaborations can empower all partners involved. The project have two aims: both to describe the successful factors of Swedish and Norwegian breastfeeding interventions programs on national level, and to elucidate the present situation and background of the present low rates of breastfeeding. Data will be collected by individual interviews with obstetricians, midwifes, district nurses, paediatricians and voluntary breastfeeding advisers in both countries. The findings will be used to promote breastfeeding and inspire other countries spatially high-income countries to focus on the benefits and importance of the breastfeeding to infant’s health.