Christopher Mellonwas quoted in the Associated Press about Qatar, and the article cited his paper, To Pay Ransom or Not to Pay Ransom:
Christopher Mellon, a researcher with the New America Foundation who co-authored a report about ransom payments, said these negotiations have often involved paying extremist groups. He said European governments have similarly gone to extreme lengths to keep these transactions private.
“They’re very deliberately nontransparent. They don’t want anyone to know that they’ve paid,” he said.