Ukrainian President Volodymyr Zelensky says Ukraine's partners in Europe have not given him sound guarantees that they will protect his country in the case of a future Russian attack.
"I am asking this very question to all our partners and I have not received a clear, unambiguous answer yet," he told reporters on midweek.
These remarks follow a day after the UK and France inked a declaration of intent on deploying troops in Ukraine if a peace deal to conclude the conflict with Moscow is agreed.
However, comprehensive defense assurances have not been agreed. The United States, which has been spearheading initiatives to end the invasion, reportedly did not sign such a pledge at discussions held in the French capital on the previous day.
After the Paris talks, which included some three dozen nations that form the group termed the 'Coalition of the Willing', British PM Keir Starmer said the UK and France would "set up operational bases across Ukraine" to deter future invasion, while France's President Macron later said thousands of troops may be sent.
Partner nations suggested that the US would assume a leading role in overseeing any ceasefire. But the key issue of ceding land that Ukraine is being asked to grant to Russia as part of the peace proposals are still being discussed.
Moscow has not yet commented on the announcement made in the French capital.
Russian President Vladimir Putin launched a comprehensive military assault of Ukraine in February 2022, and Russian forces now occupies about 20% of Ukraine's land.
The UK Prime Minister characterized the bilateral declaration as "a vital part of our commitment to stand with Ukraine for the foreseeable future".
He added: "It paves the way for the legal framework under which British, French and partner forces could operate on Ukraine's territory, securing Ukraine's skies and seas, and regenerating Ukraine's armed forces for the years to come."
Zelensky hailed that agreement as a "huge step forward".
A day later, however, he appeared less optimistic.
"I see the will, the political resolve, and that the allies are prepared, and the allies are willing to give us strong sanctions, strong security guarantees," he said when questioned if nations in Europe would defend Ukraine.
"However, until we lack such binding security pacts - formally ratified, supported by parliaments, backed by the U.S. Congress - this question remains unresolved. And even if they do, you still have to rely first and foremost on your inherent capabilities."
The Paris talks were also significant owing to the presence of envoys from former President Trump's administration, Steve Witkoff and Jared Kushner.
One envoy stated the participating countries "largely finished" their work on agreeing security protocols.
Recently, the President indicated a peace deal was "ninety percent complete".
Territorial concessions and defense pledges have been at the center of outstanding matters for negotiators.
Putin has repeatedly warned that Ukraine's military must pull back from the entirety of the Donbas region or Moscow will take control, dismissing potential concessions over how to conclude hostilities.
Zelensky has so far ruled out ceding any territory, but has proposed that Ukraine could withdraw its troops to an established line - but provided that Russia reciprocated the action.
Russian forces now holds about 75% of the Donetsk oblast, and some 99% of the adjacent Luhansk region. The pair of oblasts form the industrial Donbas region.
Attacks have been escalating against Ukrainian cities - with a focus on power facilities. Moscow is also achieving slow progress in seizing additional Ukrainian land.
Ukraine has hit back at objectives inside Russia with drones, albeit with more limited success.
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