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

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

(Reuters) -Ukrainian President Volodymyr Zelenskiy said he had discussed improved air defences and intensified sanctions against Russia with two U.S. lawmakers who are backing a bill to impose tougher punitive measures against Moscow.