I think there is going to be signifcant international travel between clean countries by the end of June/mid July. One of the largest impediments is that nobody wants to put the USA on a blacklist.
Pretty amazing how US & Russia are off of Turkey's entry list:
1. Nationals of Algeria, Angola, Austria, Azerbaijan, Bangladesh, Belgium, Bulgaria, Cameroon, Canada, Chad, China (People's Rep.), Colombia, Cote d'Ivoire, Czechia, Denmark, Djibouti, Dominica, Ecuador, Egypt, Equatorial Guinea, Finland, France, Georgia, Germany, Greece. Guatemala, Hungary, India, Iran, Iraq, Ireland (Rep.), Italy, Jordan, Kazakhstan, Kenya, Korea (Rep.), Kosovo, Kuwait, Latvia, Lebanon, Mauritania, Moldova, Mongolia, Montenegro, Morocco, Nepal, Netherlands, Niger, North Macedonia (Rep.), Norway, Oman, Panama, Peru, Philippines, Poland, Portugal, Saudi Arabia, Slovenia, Spain, Sri Lanka, Sudan, Sweden, Switzerland, Tunisia, Ukraine, United Arab Emirates and Uzbekistan are not allowed to enter Turkey.
4. Passengers who have transited or have been in Algeria, Angola, Austria, Azerbaijan, Bangladesh, Belgium, Bulgaria, Cameroon, Canada, Chad, China (People's Rep.), Chinese Taipei, Colombia, Cote d'Ivoire, Czechia, Denmark, Djibouti, Dominica, Ecuador, Egypt, Equatorial Guinea, Finland, France, Georgia, Germany, Greece, Guatemala, Hungary, India, Iran, Iraq, Ireland (Rep.), Italy, Jordan, Kazakhstan, Kenya, Korea (Rep.), Kosovo, Kuwait, Latvia, Lebanon, Mauritania, Moldova, Mongolia, Montenegro, Morocco, Nepal, Netherlands, Niger, North Macedonia (Rep.), Norway, Oman, Panama, Peru, Philippines, Poland, Portugal, Saudi Arabia, Slovenia, Spain, Sri Lanka, Sudan, Sweden, Switzerland, Tunisia, Ukraine, United Arab Emirates, United Kingdom or Uzbekistan in the past 14 days are not allowed to transit or enter Turkey.