Ukrainian troops began training in Oklahoma on Tuesday, as top U.S. military official Gen. Mark Milley traveled to Poland, near the border with Ukraine.
Driving the news: Milley, chair of the Joint Chiefs of Staff, met with his Ukrainian counterpart, Gen. Valerii Zaluzhnyi, for the first time, signaling "unwavering support" during a critical time in Russia's war with Ukraine, per a Department of Defense spokesperson.