
Ukraine war latest: Kyiv hacks Russian bomber maker; Putin's 'disregard' for troops highlighted as Russian losses near 1 million
Key developments on June 4: * Ukraine hacks Russia's Tupolev bomber producer, source claims * Putin's 'disregard' for troops highlighted as Russian losses approach 1 million, study finds * Ukraine expects to exchange 500 POWs in next swap with Russia, Zelensky says * Russia strikes Ukrainian military training facility in Poltava Oblast, military says