Tensions between Moscow and Kiev peaked earlier this year after Russia massed more troops near the disputed borders. Since 2014, at least 14,000 people have been killed in the conflict in eastern Ukraine.
Speaking at the Yalta European Strategy Summit (YES), Mr Zelenskiy said: “I think there may be.
“It’s the worst thing that can happen, but unfortunately that possibility exists. “
Zelenskiy also revealed that he tried to meet with Russian President Putin to discuss the conflict, but no meeting has yet taken place.
“I’m more interested in whether we can really meet on substance, not in a declarative way like it does with some states.
“It seems to me that today… they don’t see the point in solving the problems.
“End the war and resolve conflict issues quickly – they don’t want that. “
READ MORE: Putin steps closer to conquering Belarus after reaching economic deal
In August last year, huge protests erupted in Belarus over a contested election that gave Alexander Lukashenko a sixth term as president.
Russia has supported Belarus and has said it will be ready to send troops to the country if necessary.
Police cracked down on protesters and several opposition figures were arrested or jailed.
Mathieu Boulegue, researcher at Chatham House think tank, said: “Lukashenko is no longer really willing to participate. [in the drills] in 2017 to be one of the most boastful, in a way, about the importance of this exercise in terms of the intimidation it represents against the West. “
The two presidents spoke for nearly four hours and announced that 28 programs strengthening integration had been approved.
However, it stops before a full merger and includes the establishment of a single gas market by the end of 2023.
Although Russia backs Belarus, relations were strained after Lukashenko berated Moscow for trying to force it to relinquish control over economic assets.