A group of refugee minors board an airplane for Portugal in Athens, Greece, on July 7, 2020. A total of 25 minors departed from Athens international airport for Portugal on Tuesday. The relocation program of unaccompanied refugee minors from Greece to other EU member states continues despite the COVID-19 challenge, after it was launched a few months ago by the Greek government and the European Commission, Greek officials said Tuesday. (Photo by Lefteris Partsalis/Xinhua)

An employee of the International Organization for Migration (IOM) walks past a group of refugee minors, who prepare to board an airplane for Portugal, in Athens, Greece, on July 7, 2020. A total of 25 minors departed from Athens international airport for Portugal on Tuesday. The relocation program of unaccompanied refugee minors from Greece to other EU member states continues despite the COVID-19 challenge, after it was launched a few months ago by the Greek government and the European Commission, Greek officials said Tuesday. (Photo by Lefteris Partsalis/Xinhua)

A group of refugee minors prepare to board an airplane for Portugal in Athens, Greece, on July 7, 2020. A total of 25 minors departed from Athens international airport for Portugal on Tuesday. The relocation program of unaccompanied refugee minors from Greece to other EU member states continues despite the COVID-19 challenge, after it was launched a few months ago by the Greek government and the European Commission, Greek officials said Tuesday. (Photo by Lefteris Partsalis/Xinhua)