Russia vows revenge for Ukraine’s election-day attacks as poll shows win for ruling party

Russia vowed on Sunday to “intensify” its strikes on Kyiv in response to Ukrainian drone attacks on Moscow, as an exit poll showed the ruling United Russia party on course to win tightly controlled parliamentary elections.Ukraine fired waves of drones at Moscow and the surrounding region on the final day of voting, killing two people and setting an oil refinery ablaze, officials said.Russia’s defence ministry accused Ukraine of attempting to “disrupt the democratic will of Russian citizens” and vowed a response.An exit poll published by a state-run pollster showed United Russia on course to win 49.4 per cent of the vote, around the same it achieved in the previous election.