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Putin's air force 'retreats from war zone after spy plane downed'
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Russia may 'limit operational area of aircraft after spy plane downed'
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Ukrainian forces ‘break through Russian defences in the south’
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Russia ‘striking civilian infrastructure after battlefield setbacks’
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Zelensky defies calls to surrender as cities ‘wiped off face of Earth’
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Russia to deploy new missiles to Crimea as Ukraine tensions rise
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