Tit-for-tat moves this week included the use of American-made ballistic missiles to strike inside Russia, and new nuclear threats from Moscow. Neither appear to have influenced the war on the ground.

Russia launched a new non-nuclear ballistic missile with medium range on Ukraine’s Dnipro region on Thursday, Russia’s President Vladimir Putin said in a televised statement, marking another significant escalation in the 1,

Russia's new intermediate-range ballistic missile has NATO members on edge after the missiles were used in a strike on Ukraine early Thursday morning.