Volodymyr Zelenskyy says drone incursions are ‘an obvious expansion of the war by Russia’ as neighbouring countries deploy air defences

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Romania became the latest Nato member state to report a drone incursion into its airspace , with Poland scrambling aircraft in response to fresh Russian drone strikes just over the border in Ukraine.

Romania’s defence ministry said on Saturday its airspace had been breached by a drone during a Russian attack on infrastructure in neighbouring Ukraine. Romania scrambled two F-16 fighter jets late on Saturday to monitor the situation after the strikes, the ministry said in statement.