New Delhi, Nov. 5 -- Monday's attacks on a shelter and former school with bunker-busting bombs came as people were lined up for aid in Komyshuvakha, a village in the Zaporizhzhia region. Teams of emergency workers and volunteers picked through debris at the cratered blast sites, as bodies were pulled from the rubble and carried away in white plastic sheeting. More than 45 residents remained missing.

"The scale of the tragedy is terrifying," said Mykhailo Semikin, acting head of the region's military administration, in an online post. "This is one of the worst tragedies in terms of the number of civilian victims in our region since the start of the full-scale war."

As Ukraine prepared for a new round of U.S.-brokered peace negotiations n...