President Volodymyr Zelensky of Ukraine pleaded on Wednesday for more weapons and sanctions, showing searing footage of civilian casualties during a virtual address to U.S. lawmakers. In a remarkably direct appeal, he invoked the memories of Pearl Harbor and the Sept. 11 attacks. “We need you right now,” he said. “I call on you to do more.”

Zelensky pressed for a NATO no-fly zone over Ukraine, which the U.S. and alliance leaders have rejected because it would draw NATO pilots into direct confrontation with the Russians. 

He also asked for more weapons and antiaircraft batteries, a request to which Republicans and Democrats have been far more receptive, and for sanctions to be ratcheted up “every week” against Russia. Members of Congress were visibly emotional