Ukrainian President Volodymyr Zelensky announced on Sunday, 11 May that Kyiv has formally submitted a list of 1,000 detainees to the Russian side as part of a planned 1,000-for-1,000 prisoner exchange, according to the Ukrainian presidential press service. The announcement came even as both sides accused each other of violating a declared three-day ceasefire agreed to on Friday.

Zelensky's Statement on the Exchange

"The prisoner exchange, 1,000 for 1,000, is being prepared and must take place. The Americans assumed responsibility for these guarantees," Zelensky said in his Sunday evening address to the nation. The Ukrainian president added that the conflict with Russia must be brought to an end and that reliable security guarantees must be established. He also noted that Russian President Vladimir Putin had signalled openness to direct talks. "Now Putin himself says that he is finally ready for real meetings. We pushed him a little toward this, and we have long been ready for such meetings ourselves — now a format must be found," Zelensky said.

Ceasefire Agreed, Then Disputed

Russia and Ukraine had agreed on Friday to a three-day ceasefire running from Saturday to Monday, timed to coincide with Victory Day celebrations. The truce also included the agreement to swap 1,000 prisoners on each side. However, within hours of the ceasefire taking effect, both nations traded accusations of violations.

Mutual Accusations of Violations

The Russian Defence Ministry said on Sunday that Ukrainian forces committed 16,071 violations of the ceasefire regime in the preceding 24 hours, up from the 8,970 violations it reported on Saturday across multiple regions. Russian forces, the ministry said, responded with retaliatory strikes against multiple launch rocket systems, artillery and mortar positions, command posts, and drone launch sites. Ukrainian authorities, for their part, said at least one person was killed and 15 others were injured in Russian attacks across Ukraine despite the truce. The General Staff of the Ukrainian Armed Forces stated that Russian forces attacked Ukrainian positions 60 times on Sunday alone.

US Involvement and Diplomatic Signals

Zelensky's reference to American guarantees over the prisoner exchange underscores the continued role of Washington as a key broker in any prospective peace framework. This is notable amid broader diplomatic signalling — Putin's stated readiness for direct meetings, if genuine, would mark a shift from months of positional deadlock. Analysts have cautioned, however, that ceasefire violations on the first day of a truce cast doubt on either side's commitment to a durable agreement. This is not the first ceasefire that has broken down almost immediately since the conflict began in February 2022.

What Happens Next

The prisoner exchange, if it proceeds, would be one of the largest single swaps of the conflict. Whether the ceasefire holds through Monday — and whether direct talks between the two leaders materialise — will be closely watched by international mediators and affected families on both sides.