Angela Merkel spoke at the European Parliament in Strasbourg in what is likely to be her swan song as German chancellor before that body and seconded French President Emmanuel Macron's call for a European army.
"We are all realising that it is ever more hard to find a balanced outcome", she said while thanking Mr Barnier for his work.
"And that means that, if we Europeans want to survive as a community, we must take our fate more decisively into our own hands".
Dr Merkel's sudden emphasis on the French idea of creating a new European army is designed to hide the fact that, on nearly any other major EU topic, she is failing to support France's stances.
She was more tactful in putting it in the context of being an independent partner than Macron was when he said a European army might also face the United States as an opponent. "It would not be directed against NATO, but it would complement it, without ever questioning the link" with the Atlantic Alliance.
In a speech to the European Parliament on Tuesday, Merkel said that countries combining their forces would be the best way to secure peace on the continent. But this important link to Europe could change with the announced withdrawal of the German chancellor.
Nigel Farage, leader of the Eurosceptic group in the parliament, seized on Merkel's remarks, claiming they showed the European Union wanted to become an empire, while accusing the bloc of starting a cold war with the US.
Responding to Merkel's speech in Strasbourg, UKIP MEP Nigel Farage said: "One hundred years on from the Armistice, we should be genuinely anxious".
French President Emmanuel Macron abandoned this caution recently by reviving the European army idea.
While Merkel has stressed, this idea does not go against North Atlantic Treaty Organisation and a European army could be a good addition to the Alliance. Her remarks drew loud applause in the legislature but also boos from nationalist members.
European Commission President Jean-Claude Juncker shared the opinion of Mrs Merkel.
"We have to protect ourselves with respect to China, Russia and even the United States of America", Macron stated plainly.
It seems President Macron and Angela Merkel got along so well at the armistice commemoration at the weekend that one elderly lady mistook Merkel for Macron's wife.
On Brexit, he said the UK's divorce is a "tragedy, a historical error and a mistake". "We have to look at responsibility and control, a banking union and then later a European insurance system".