The US is spending billions to arm Ukraine against Russian invaders. But without the proper training or supplies, Javelin missiles can only do so much. This episode was produced by Hady Mawajdeh and Victoria Chamberlin, edited by Matt Collette, fact-checked by Amina Al-Sadi, engineered by Paul Mounsey, and hosted by Noel King. Transcript at vox.com/todayexplained   Support Today, Explained by making a financial contribution to Vox! bit.ly/givepodcasts Learn more about your ad choices. Visit podcastchoices.com/adchoices