Washington’s decision to let Ukraine strike deep into Russia with long-range U.S. missiles could lead to World War Three and will receive a swift response, Vladimir Dzhabarov, first deputy head of the Russian upper house’s international affairs committee, said on Sunday, according to the TASS news agency.

Not for the first time, Poland scrambled fighter jets as missiles headed for western Ukraine. And in the capital, Kyiv, fragments from intercepted missiles and drones fell in several places, but there were no reports of injuries.