Key updates on June 3: US Vice President Kamala Harris will attend global peace summitRussian strike in Donetsk Oblast kills 2, including 12-year-old boyUK military chief confident Ukraine will win the war, but allies must ‘maintain support’Restarting Zaporizhzhia nuclear plant ‘difficult to envisage’ during war, says IAEA chiefRussian attacks against Ukraine kill 1, injure 13 over past dayU.S. Vice President Kamala Harris will attend the upcoming global peace summit to be held on June 15-16 in Switzerland, the White House said on June 3. The announcement comes a few days after it was reported…