Ukraine hit dozens of long-range bomber aircraft across Russia on June 1 with drones that were smuggled in wooden shipping crates carried on truck beds and then launched from nearby locations. An RFE/RL map shows the locations of the strikes.

At least 13 Russian aircraft were destroyed in the coordinated Ukrainian drone strikes, according to a Ukrainian official.

President Volodymyr Zelenskyy said Defense Minister Rustem Umerov would sit down with Russian officials at the second round of peace talks on Monday.

Medvedev and Russian officials have called for Kyiv to concede occupied and unoccupied territory in the regions of Donetsk, Luhansk, Zaporizhzhia and Kherson, which Moscow claims to have annexed but does not fully control. The ISW cast doubt on the likelihood of it ever being able to capture this territory.

On the eve of peace talks, Ukraine and Russia sharply stepped up the ongoing war with one of the biggest drone battles of the conflict and an ambitious attack carried out on nuclear-capable bombers deep in Siberia.

An air alert has been announced in Dnipropetrovsk, Kirovohrad, Cherkasy, Vinnytsia and Zhytomyr regions of Ukraine, according to the data of the online map of the Ministry of Digital Transformation of the country.

Ukrainian forces stunned the Russian military Sunday after wiping out and damaging dozens of nuclear bombers and other aircraft with ambitious and complicated attacks that struck President Vladimir Putin’s air bases deep inside the country,

Based on current figures, Dmitry Medvedev's proposed buffer zone would take 91 years and cost Russia 50 million soldiers, ISW analysts wrote on Sunday.

American weapons are important, but Ukrainian drones have changed everything.