Emmanuel Macron says "there is a risk our Europe could die" at a speech today.
The French president called the war in Ukraine the "principal danger for European security".
He adds that the main condition for peace in Europe is that "Russia does not win this war of aggression".
Speaking from the Sorbonne University in Paris, Mr Macron calls for a boost in Europe's cybersecurity capacity, closer defence ties with the UK and the creation of a European academy to train high-ranking military personnel.
"There is no defence without a defence industry ... we've had decades of under-investment," he adds.
"We must produce more, we must produce faster, and we must produce as Europeans."
