This was stated at a briefing by the press secretary of the President of Ukraine Serhiy Nikiforov.
“Zelensky, during Merkel’s visit to Kiev on August 22, will talk about how Germany will specifically guarantee the obligations it made if Russia tries to somehow abuse its monopoly position after the launch of Nord Stream 2,” TASS quoted him as saying. ...
In July, Zelensky, after a meeting with Merkel, said that they have different views on the Nord Stream 2 project.