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 has fired a new intermediate-range ballastic missile at Ukraine in what Ukrainian president Volodymyr Zelensky called a “severe escalation” of Moscow’s invasion Initally, Ukraine suggested an intercontinental ballistic missile (ICBM) had been launched against the city of Dnipro,

This past week has seen the most significant escalation in hostilities Ukraine has witnessed since Russia's full-scale invasion and marks a new chapter in the nearly three-year war.