German Chancellor Olaf Scholz urged Russian President Vladimir Putin in a rare phone call on Friday to begin talks with Ukraine that would open the way for a “just and lasting peace”.

In a one-hour phone conversation, their first in almost two years, Scholz also demanded the withdrawal of Russian troops from Ukraine and reaffirmed Germany’s continued support for Ukraine, a German government spokesman said.

The call comes as Ukraine faces increasingly difficult conditions on the battlefield amid shortages of arms and personnel while Russian forces make steady advances.

“The Chancellor urged Russia to show willingness to enter talks with Ukraine with the aim of achieving a just and lasting peace” the spokesperson said in a statement.

“He stressed Germany's unbroken determination to back Ukraine in its defence against Russian aggression for as long as necessary,” the spokesperson added.

Scholz spoke with Ukraine’s President Volodymyr Zelenskiy ahead of his call with Putin and would brief the Ukrainian leader on the outcome afterwards, the spokesperson said.

Germany is Ukraine’s largest financial backer and its largest provider of weapons after the United States, whose future support for Kyiv appears uncertain following Donald Trump's victory in the US presidential election.

Trump has repeatedly criticised the scale of Western financial and military aid to Ukraine and has suggested he can put a swift end to the war, without explaining how.

Scholz and Putin last spoke in December 2022, 10 months after Russia launched its full-scale invasion of Ukraine, plunging relations with the West into their deepest freeze since the Cold War.

Scholz, the most unpopular German chancellor on record, is preparing for a national election on February 23 in which his Social Democrats face stiff competition from left-wing and far-right parties that are critical of Germany's backing for Ukraine.