Should countries resolve the problems with their healthcare systems by focusing inwardly, or should they look outward to share resources with other countries?

It is believed that modern countries of the world are developed in all areas, which includes healthcare. However, it is known that that inadequate health is found in all countries (regardless if developed or undeveloped). Improvement in healthcare should be the goal of all global healthcare systems. Should countries resolve the problems with their healthcare systems by focusing inwardly, or should they look outward to share resources with other countries? Explain your answer.