Portuguese Prime Minister Antonio Costa (R) and visiting Argentine President Alberto Fernandez meet the press after their meeting in Lisbon, Portugal, May 10, 2021. (Photo by Pedro Fiuza/Xinhua)

Portuguese Prime Minister Antonio Costa (R) meets with visiting Argentine President Alberto Fernandez at the Sao Bento Palace in Lisbon, Portugal, May 10, 2021. (Photo by Pedro Fiuza/Xinhua)

Portuguese Prime Minister Antonio Costa (R) greets visiting Argentine President Alberto Fernandez before their meeting at the Sao Bento Palace in Lisbon, Portugal, May 10, 2021. (Photo by Pedro Fiuza/Xinhua)

Portuguese Prime Minister Antonio Costa (R) greets visiting Argentine President Alberto Fernandez before their meeting at the Sao Bento Palace in Lisbon, Portugal, May 10, 2021. (Photo by Pedro Fiuza/Xinhua)

Portuguese Prime Minister Antonio Costa (R) and visiting Argentine President Alberto Fernandez meet the press after their meeting in Lisbon, Portugal, May 10, 2021. (Photo by Pedro Fiuza/Xinhua)