WATCH: President Joe Biden details how the United States plans to assist Ukraine as Russian attacks continue. https://www.10tv.com/article/news/nation-world/ukraine/ukraine-zelenskyy-to-face-congress-for-russia-help/507-a464708e-3c57-4ad6-b109-eee77f78946e WASHINGTON (AP) — Ukrainian President Volodymyr Zelenskyy summoned the memory of Pearl Harbor and the Sept. 11, 2001, terror attacks in appealing Wednesday to the U.S. Congress to do more to help Ukraine's fight against Russia, but he acknowledged the no-fly zone he has sought to “close the sky” to airstrikes on his country may not happen. Livestreamed into the Capitol complex, Zelenskyy said the U.S. must sanction Russian lawmakers and block imports. But rather than an enforced no-fly zone that the White House has resisted, he instead sought other military aid to stop Russian assault. For the first time in a public address to world leaders, he showed a packed auditorium of lawmakers a graphic video of the destruction and devastation his country has suffered in the war, along with heartbreaking scenes of civilian casualties. “We need you right now,” Zelenskyy said. "I call on you to do more.” Lawmakers gave him a standing ovation, before and after his short remarks, which Zelenskyy began in Ukrainian through an interpreter but then switched to English in a heartfelt appeal to help end the bloodshed. “I see no sense in life if it cannot stop the deaths,” he said. Nearing the three-week mark in an ever-escalating war, Zelenskyy has used the global stage to implore allied leaders to help stop the Russian invasion of his country. The young actor-turned-president often draws from history, giving weight to what have become powerful appearances. President Joe Biden's administration has stopped short of providing a no-fly zone or the transfer of military jets from neighboring Poland as the U.S. seeks to avoid a direct confrontation with nuclear-armed Russia. Biden was to deliver his own address following Zelenskyy’s speech, and was expected to announce an additional $800 million in security assistance to Ukraine, according to a White House official. That would bring the total announced in the past week alone to $1 billion. It includes money for anti-armor and air defense weapons, according to the official, who was not authorized to comment publicly and spoke on the condition of anonymity. The White House is considering giving Ukraine access to U.S.-made Switchblade drones that can fly and strike Russian targets, according to a separate person familiar with the matter who was not authorized to speak publicly.