President Volodymyr Zelenskyy of Ukraine said Monday that he would seek to replace the country’s prime minister, a major government shake-up that comes amid battlefield setbacks and a souring mood in the country.

Zelenskyy said in a post on Facebook that he would nominate Yulia Svyrydenko, who is now serving as a first deputy prime minister and had played a prominent role in negotiating a natural resources deal with the Trump administration. She would replace Denys Shmyhal, who has held the position since 2020 and was in office when Russia invaded.

The move, which would be the highest-level government shuffle since Russia’s invasion more than three years ago, needs to be approved by a vote of parliament, where Zelenskyy’s party has a majority.

Zelenskyy said in the post that he wanted to “renew” the country’s government. The announcement followed months of escalating Russian drone and missile attacks on cities and setbacks on the battlefield, and as ceasefire talks pushed by the Trump administration have stalled.

— The Associated Press