Ukrainian President Volodymyr Zelenskiy has repeatedly urged Ukraine's Western allies to impose tougher sanctions on Moscow to force the Kremlin to agree to a ceasefire as a step towards reaching an end to the war, now 40 months old.

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