Russia would hit targets it has so far not struck if long-range missiles are delivered to Ukraine, Russian President Vladimir Putin has warned.

 https://en.interaffairs.ru/article/the-kremlin-made-a-strong-warning-to-the-white-house/

 
Putin warned Ukraine against obtaining and using the U.S. long-range missiles
Russia would hit targets it has so far not struck if long-range missiles are delivered to Ukraine, Russian President Vladimir Putin has warned. “If they are supplied, we will draw the appropriate conclusions and use our weapons, which we have enough of, in order to strike at those targets that we have not yet struck”
Putin interview broadcast June 5th
Putin noted that their range does not depend on the system itself, but on the missiles that are used and added that the whole “fuss around” the additional arms deliveries to Kiev “serves only one purpose – to prolong the armed conflict as much as possible”