Ukraine performed a coordinated strike on several Russian airfields Sunday as peace talks with Russia in Istanbul were set to be held on Monday. The attack, which was supervised by Ukrainian President Volodymyr Zelensky and planned for over a year,

As Ukraine and Russia prepare for peace talks scheduled for June 2 in Istanbul, few observers expect a breakthrough. While the U.S. and Ukraine have pushed for an unconditional ceasefire, the Kremlin has rejected it.

Russia has proposed another attempt at peace negotiations with Ukraine on Monday in Istanbul, but both sides remain firmly entrenched in positions likely to prolong the war.

Ukraine said Sunday that its drones destroyed Russian bombers worth billions of dollars as far away as Siberia in its longest-range assault of the war, as it geared up for talks on prospects for a ceasefire.

The drone attacks came on the eve of expected peace talks in Istanbul between Russia and Ukraine, which were already strained by uncertainty and pressure from U.S. President Donald Trump.

President Trump and Russian President Vladimir Putin spoke for two hours in a call both called “useful," but offered no breakthrough in Russia–Ukraine peace negotiations.

Ukraine will participate in the second round of negotiations with Russia in Istanbul, with the Ukrainian delegation led by Defense Minister Rustem Umerov, according to the Telegram channel of President Volodymyr Zelenskyy.

President Trump criticizes Russia’s president over ceasefire negotiations, threatens to withhold federal funds from California if it doesn’t change its policy on transgender women in