In addition to the back-to-back, mammoth overnight strikes, other Russian attacks killed at least 21 civilians across Ukraine on July 7-10. In eastern Donetsk oblast, or region, Russian artillery shelling and drone attacks resulted in 15 civilians deaths,

Flattery and pressure — coupled with President Trump’s growing dissatisfaction with President Vladimir V. Putin — have helped build momentum for new economic punishments.

The co-sponsors of new bipartisan U.S. sanctions package targeting Russia have briefed European allies and Ukraine on the legislation.