However, any aggression against my country will be met with a decisive response," he said. Speaking later to reporters, Lavrov said that if any country downs objects still within Russian airspace, "they will very much regret it." Israel offers supportUkrainian President Volodymyr Zelensky announced Saturday that Israel for the first time had sent a US-made Patriot anti-missile defense system. "The Israeli (Patriot) system is operating in Ukraine. As tensions rise between Russia and European powers, the Zaporizhzhia nuclear plant -- the largest in Europe -- has been off the grid for four straight days.