Monday's talks were the first meeting between Russia's Vladimir Putin and Ukraine's Volodymyr Zelenskiy, who was elected in a landslide victory in April and made ending the war one of his campaign promises.
Russia-Ukraine long-term gas transit contract which supplies with gas many countries of the European Union ends on 31 December, while Russia is stepping up two big pipeline projects circumventing Ukraine: Nord Stream 2, bringing gas to Germany under the Baltic Sea, and Turkish Stream, which will ship under the Black Sea.
In the years since, Ukrainian soldiers and Russia-backed separatists have continued to exchange fire across World War I-style trenches along a front line that slices through eastern Ukraine.
The summit is the first meeting between Putin and Zelenskiy. "Unfortunately, we couldn't settle all issues today", Zelensky said at a joint news conference in Paris with French President Emmanuel Macron and German Chancellor Angela Merkel, who mediated the talks.
After a series of bilateral meetings at the Elysee Palace, Putin and Zelenskiy entered the room for a meeting of the four leaders making little eye contact with one another and with no smiles. The US is an important military backer for Ukraine, which is hugely out-gunned by Russian Federation. Ukraine blames the Kremlin for separatist violence in east Ukraine.
"Any secret agreements with the Kremlin behind our backs will lead to protests all over Ukraine", said Denis Krutinskiy, a 36-year-old former serviceman.
French officials say potential changes to the timeline will be discussed Monday, but stressed that the summit is aimed at fulfilling the Minsk accord - not writing a new peace deal.
Russian President Vladimir Putin walks past Republican guards as he arrives at the Elysee Palace, in Paris, December 9, 2019. Russian Federation has never openly acknowledged that it is a belligerent in the conflict, although Ukraine and its Western backers say Moscow has sent military hardware, advisors and even conventional military forces to support the separatists.
Hong Kong's Carrie Lam unbowed; wants 'action' against teachers
Earlier in the day, they arrested 11 people and seized a cache of weapons, including a firearm with more than 100 bullets. The police has in recent months banned many protests and rallies in Hong Kong , citing safety concerns.
Bayonetta And Vanquish Anniversary Bundle Confirmed For PS4, Xbox One
The third person sci-fi shooting game takes place in a space colony called Providencia that has been surpassed by enemy forces. But Providence has been taken over by a mutinous military group, who begin to devastate cities with Providence's technology.
ACC Championship, Clemson vs. Virgina
The Tigers have faced some criticism in 2019 for their weak schedule, despite winning two of the past three national titles. Lawrence has not anxious about outsider opinions, focusing in improving each week as the Tigers close in on the playoffs.
"In the first place, this means introducing changes to the country's constitution, which give Donbass - the Donetsk and Luhansk regions - a permanent special status", said Putin.
"I say very openly, we have a lot of work to do but my feeling from this meeting here today is that there is goodwill to resolve hard questions", Merkel told a joint news conference with the leaders of France, Ukraine and Russian Federation.
Zelenskiy said before Monday's talks that he hopes they will help achieve a lasting ceasefire, and that he hopes to negotiate a quick deal to exchange all prisoners held by the warring parties.
If the OSCE judges the balloting to be free and fair, then a special self-governing status for the territories will be initiated and Ukraine will be returned control of its easternmost border.
Late on Monday, Ukraine's Naftogaz CEO Andriy Kobolyev said that Ukraine was ready to sign a new transit contract with Russia's Gazprom.
Ukraine's army and Kremlin-backed separatists are set Friday (8 November) to complete the last phase of a troop pullback in the war-torn east in a key step towards a high-stakes summit with Russian Federation.
The EU is expected to extend sanctions this week by another six months.