International players must stop meddling in the Libyan conflict, the UN's special envoy told AFP on Saturday, on the eve of a summit of world powers to try to bring peace to the North African nation.

"All foreign interference can provide some aspirin effect in the short term, but Libya needs all foreign interference to stop. That's one of the objectives of this conference," Ghassan Salame said in an interview ahead of the Berlin summit.

Leaders of Russia, Turkey and France are due to join talks in Berlin on Sunday held under the auspices of the United Nations, which wants to extract a pledge from foreign powers wielding influence in the region to stop meddling in the conflict – be it by supplying weapons, troops or financing.

The UN envoy said Sunday's meeting will also seek to "consolidate" a shaky ceasefire.

"Today we only have a truce. We want to transform it into a real ceasefire with monitoring, separation (of rival camps), repositioning of heavy weapons outside urban zones," he said.

The UN had sought on multiple attempts to bid for peace, but talks have repeatedly collapsed.

On the eve of the Berlin talks, Turkish President Recep Tayyip Erdogan warned Europe to stand united behind Sarraj's government, as Tripoli's fall could leave "fertile ground" for jihadist groups like IS or Al-Qaeda "to get back on their feet".

Both leaders of the warring factions – strongman Khalifa Haftar and the head of Tripoli's UN-recognized government Fayez al-Sarraj – are also expected at the first gathering of such scale on the conflict since 2018.

More recently, Sarraj's troops in Tripoli have been under attack since April from Haftar's forces, with clashes killing more than 280 civilians and 2,000 fighters and displacing tens of thousands.

The European Union is watching with growing alarm at the escalating strife on its doorstep as it counts on Libya as a gatekeeper deterring migrants from crossing the Mediterranean.