Merkel's plane had technical difficulties.
The plane had to divert from over the Netherlands back to Germany.
Reason:
Failure of electronic security systems.
What do you think, Anons?
She will be late an hour to Buenos Aires now.
Source is German "Welt" (in German only):
https://www.welt.de/politik/deutschland/article184707884/Airbus-Konrad-Adenauer-Technischer-Defekt-Merkel-muss-Flug-zu-G20-unterbrechen.html#Comments