Ukraine will insist on sovereignty and territorial integrity at the next round of peace negotiations with Russia that is to take place in Turkey, President Volodymyr Zelenskyy said late on Sunday.

"Our priorities in the negotiations are known: sovereignty, territorial integrity of Ukraine are beyond doubt," Zelenskyy said in his nightly video address. 

Ukraine is prepared to discuss adopting a neutral status as part of a peace deal with Russia, but such a pact would have to be guaranteed by third parties and put to a referendum, he said.

"Security guarantees and neutrality, non-nuclear status of our state. We are ready to go for it. This is the most important point," Zelenskyy said.

Regarding the prison exchange, Zelenskyy said in an interview that his country stands ready for an all-for-all exchange with Russia before the end of "hostilities," the presidential press service reported on the same day.

(With input from Reuters)