Mr Gabriel claimed even Germany – the EU’s largest and strongest financial contributor – would have to accept more EU rules in the coming years.
He said: “In the world of the 21st Century, Europe will only be able to act on a sovereign basis via the European Union, by winning back sovereignty through the European Union.
“Even Germany, big and strong as it is, in tomorrow’s world will not have a voice by itself. Our children and grandchildren will have the choice of having no voice to be heard or a common European voice.”
The German politician’s vision echoes the proposals EU Commissioner Jean-Claude Juncker presented during his State of the Union speech in September.
Proposals included taking more decisions on joint foreign policy by majority vote, rather than unanimity, and setting up a European Monetary Fund complete with a eurozone finance ministry and minister.