President Donald Trump condemned Russia's latest missile barrage against Ukraine, which officials in Kyiv called the deadliest strike this year, and renewed calls for Congress to approve a $60 billion security assistance package stalled in the House.

The White House seized on the attack to pressure House Republicans, who have blocked a vote on the aid despite its passage in the Senate with bipartisan support months ago. Speaker Mike Johnson faces a revolt from his conservative flank—led by Representative Marjorie Taylor Greene—who argue the money should go to border security and domestic priorities instead.

Representative Matt Gaetz and others have demanded that European allies increase their own defense spending before the U.S. commits further aid. The standoff has drawn criticism from Democrats and moderate Republicans who view the delay as undermining Ukraine's defense against Russian assault.

Secretary of State Antony Blinken spoke with Ukrainian Foreign Minister Dmytro Kuleba to reaffirm U.S. commitment to Ukraine's defense. The State Department warned that delays in military supplies directly hamper Ukraine's ability to defend its cities and critical infrastructure.

Senate Majority Leader Chuck Schumer said the latest attacks should force House Republicans to act. Johnson's political calculation now hinges on whether he can satisfy his conservative members without appearing to abandon Ukraine—or whether isolationist voices have gained enough power to block the measure entirely.

The House returns from recess on September 9, when the Ukraine aid package is expected to face a floor vote.