Russian President Vladimir Putin has sharply hit back at Ukrainian President Volodymyr Zelensky’s warning over Russian airspace, reportedly calling the move “state terrorism” and vowing that Moscow will respond. The exchange comes as tensions between Russia and Ukraine remain high, with Kyiv pushing tougher measures against Russian military activity and Moscow warning of consequences. Zelensky’s latest warning has also fueled speculation over whether Ukraine’s strategy is linked to broader NATO plans, including concerns surrounding Russia’s Kaliningrad exclave. As both sides trade increasingly severe warnings, could the Ukraine war be entering a decisive new phase?