Sky's John Sparks is in Kharkiv in north-eastern Ukraine where loud explosions and sirens can be heard from the rooftop of his hotel.

Meanwhile Sky's Mark Austin left his position in the Ukrainian capital Kyiv where sirens rang out across the city.

For the latest developments:
https://news.sky.com/story/explosions-reported-near-kyiv-after-putin-authorises-military-operation-in-ukraine-ukraine-latest-12541713

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