Queen Wilhelmina 'considered Nazi swap for Belgian royals'

 From this BBC report.

She asked her foreign minister in exile in London, Eelco van Kleffens, to "sound out", via the Vatican, whether high-ranking Nazis could be offered an escape route in return for the Belgian royal family's release, says Michael Riemens who has just published the minister's diaries.

The revelations shed further light on how top Nazis were trying to negotiate their escape from Europe in the dying days of the war. Many high-ranking Nazis were successfully spirited away to Latin America, including Adolf Eichmann, Josef Mengele and Klaus Barbie. See Archaeologists find possible nazi refuge in Argentina