Angela Merkel had the advantage that during her 16 years at the helm, Germany was spared the economic and political upheaval many of its neighbors experienced, making her brokering EU leadership possible. Her successors may not be so lucky.
On various occasions in the past, Berlin has offered political support for international military missions only, citing the German constitution to rule out its own participation. This policy has run its course.
The Europeans are insufficiently prepared to provide more in terms of defense and stability. There will be a rude awakening even with a President Biden in the White House.