Since the beginning of the war in Ukraine, the United States and allies have held back from sending Kyiv their most potent arms.Over the past few weeks, that has started to change.Guest: Eric Schmitt, a national security correspondent for The New York Times.Background reading: Ukraine has a narrow window of time to retake more territory ahead of an expected Russian spring offensive.The Biden administration is considering the argument that Kyiv needs the power to strike Crimea, the Ukrainian peninsula annexed by Russia in 2014.For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.