Rus­sia launched a wave of at­tacks on Ukraine’s cap­i­tal, Kyiv, overnight, with at least sev­en peo­ple killed in strikes that hit city build­ings and en­er­gy in­fra­struc­ture. A Ukrain­ian at­tack on south­ern Rus­sia killed three peo­ple and dam­aged homes, au­thor­i­ties said.

The at­tacks came dur­ing a re­newed U.S. push to end the war that has raged for near­ly four years, and talks about a U.S. peace plan. U.S. Army Sec­re­tary Dan Driscoll met with Russ­ian of­fi­cials for sev­er­al hours in Abu Dhabi, Unit­ed Arab Emi­rates, on Tues­day, a U.S. of­fi­cial told The As­so­ci­at­ed Press.

Driscoll, who be­came part of the Amer­i­can ne­go­ti­at­ing team less than two weeks ago, is head­ing up the lat­est phase of talks in­volv­ing the terms of a pos­si­ble peace set­tle­ment with Rus­sia.