Ukraine rejected calls from Moscow and Washington to commit to engaging in peace talks with Russia next week, demanding to see Russian peace proposals before attending further negotiations.

In nationally televised remarks on Friday, Ukrainian President Volodymyr Zelenskyy’s chief of staff, Andriy Yermak, said Kyiv is dedicated, in principle, to continued peace negotiations with Russia. However, he stopped short of agreeing to the proposed Monday peace talks in Istanbul.

“We are ready for dialogue, but we demand clarity — clear and, most importantly, balanced proposals,” Mr. Yermak said.

Russia announced this week that it was ready to continue the peace negotiations that began on May 16, offering up June 2 as a prospective date. The Kremlin announced Friday that Russia’s delegation would travel to Istanbul over the weekend for more talks.

Still, Russia’s refusal to release a list of its terms for peace has disturbed Ukrainian officials, who say such a document is necessary.

“In order for the next planned meeting to be substantive and meaningful, it is important to receive a document in advance so that the delegation that will attend has the authority to discuss the relevant positions,” Ukrainian Foreign Minister Andrii Sybiha said.

Ukraine said it has already submitted its peace terms to Washington and Moscow, but Russia has maintained that it won’t release its official terms until the second round of negotiations. Ukrainian officials said this is an attempt to slow down the peace process.

The first round of talks, also held in Istanbul, ended with little progress. Ukraine has remained focused on securing a ceasefire before turning to a more comprehensive peace plan. Russian leaders, including President Vladimir Putin, have rejected this option, asserting that a temporary ceasefire will give Ukraine time to rebuild.

Russia, for its part, has said it’s dedicated to solving the key causes of the war, including halting NATO’s eastward expansion.

President Trump’s special envoy to Ukraine, Keith Kellogg, has acknowledged Russia’s fear of the U.S.-led military alliance spreading further east and said Ukraine joining NATO is not on the table. On Friday, Mr. Kellogg encouraged Ukraine to participate in Monday’s talks even if Russia doesn’t submit its peace terms.

He also called Ukraine’s peace terms “reasonable.”

The peace negotiations come as Moscow continues its assault along the Russia-Ukraine front line, taking several border villages and firing airstrikes. On Thursday evening, Ukrainian authorities reported attacks involving nearly 100 drones and two ballistic missiles targeting civilian infrastructure.

• Vaughn Cockayne can be reached at vcockayne@washingtontimes.com.