Summary

• President Volodymyr Zelensky has confirmed for the first time that the Ukrainian military is conducting a cross-border offensive inside Russia's western Kursk region

• Late Saturday night, Zelensky said Ukraine was pushing the war onto "the aggressor's territory"

• Russia's foreign ministry says its army will deliver a "tough response" to the incursion

• On Tuesday, Kyiv launched the surprise attack and has advanced more than 10km (six miles) inside Russia

• Russia says 76,000 people have been evacuated from border areas in the Kursk region

• This is the deepest raid into the country since Moscow began its full-scale invasion of Ukraine in February 2022

• Kyiv and several other regions came under a Russian drone and missile attack overnight, killing two, local officials said