Like I just wrote in another comment: the quoted part of the interview is low on facts and consists mainly of opinion. Yes, the U.S. tapped Merkel's phone. Russia and China spy on Germany as well, though I don't know how good their phone tap capabilities are. That headlines like “Vladimir Putin has listened to cellphone of the German chancellor for ten years” “would lead to revolutionary circumstances in Germany” is total nonsense in my opinion.
I assume Jebsen and Wimmer try to suggest that Germany is not a sovereign state. Points like that are often made in their circles and link to the “Reichsbürgerbewegung”.