President Vladimir Putin said Friday that Russia will continue to test and start mass-producing the hypersonic ballistic missile that it fired at Ukraine Thursday.

Russia will continue testing and start mass producing the new "Oreshnik" missile, an intermediate-range ballistic missile that was used to target Dnipro, Ukraine, this week, Russian President Vladimir Putin said Friday.

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.