Ukraine fired drones at Moscow days before Vladimir Putin was set to host world leaders at a Victory Day parade through the capital. Russia was forced to cancel Second World War anniversary events in occupied Crimea because of security concerns. Volodymyr Zelensky, the Ukrainian president, has said he cannot guarantee the safety of delegates attending the march through Moscow on Friday, which will be attended by Xi Jinping, the Chinese leader. ...It came as Ukrainian forces launched a second incursion into the Russian region of Kursk, breaking across the border and destroying bridges. On Monday Kyiv fired dozens of drones...