Accusations ricocheted between Washington and Moscow on Monday (June 24) after a missile attack on Sevastopol in Russian-occupied Crimea left four civilians dead and over 150 injured.

Russia claims the US was directly involved, raising the stakes in an already volatile conflict.

Russia: US “Crossed a Red Line”

The Kremlin reacted with fury.

Dmitry Peskov, a spokesperson for President Vladimir Putin, condemned the attack as “barbaric” and a direct consequence of US involvement in the war.

Russia alleges, according to Russia’s state-owned RIA Novosti, that the US not only supplied Ukrainian troops with the long-range ATACMS (Army Tactical Missile System) missiles used in the strike but also provided targeting data and guidance.

“The involvement of the United States of America in hostilities, direct involvement in hostilities that result in the death of Russian civilians, this, of course, cannot but have consequences,” Peskov declared. “What exactly – time will tell.”

The presidential spokesman left the nature of these consequences deliberately ambiguous, stoking fears of a harsh Russian response.

Further escalating tensions, Russia summoned US Ambassador Lynn Tracy, delivering a demarche, a formal complaint, accusing the US of being a full participant in the conflict.