Ukrainian negotiators at talks scheduled for June 2 in Istanbul will present to the Russian side a proposed roadmap for reaching a lasting peace settlement, according to a copy of the document seen by Reuters.

With 41 military aircraft impacted, the Ukrainian drone attack was described by some commentators as Russia's "Pearl Harbor." The attack on Pearl Harbor in December 1941 was a surprise air raid by Japan on the U.S. during World War II. Kyiv's assault follows ground advances by Moscow troops in recent days in Ukraine's Sumy border region.

By making harsh, uncompromising demands in peace talks with Ukraine while continuing to pummel it with waves of missiles and drones, Russian President Vladimir Putin is sending a clear message: He will only accept a settlement on his terms and will keep fighting until they’re met.

Kyiv said it was committed to the search for peace, but that it was waiting for a memorandum from the Russian side setting out their proposals.

Kremlin spokesperson Dmitry Peskov stressed that a high-level summit would require concrete outcomes from the negotiations between the Russian and Ukrainian delegations.

Ukraine is ready to resume direct peace talks with Russia in Istanbul on Monday, a top adviser to President Volodymyr Zelenskyy said, following days of uncertainty over whether Kyiv would attend a further meeting proposed by Moscow.

KYIV (Reuters) -Ukrainian President Volodymyr Zelenskiy said on Thursday that Russia was engaging in "yet another deception" by failing to hand over its peace settlement proposal ahead of a potential meeting between Moscow and Kyiv.