Why has Ukraine invaded Russia's Kursk region?

Russia-Ukraine War: Russia Fires Glide Bombs At Troops In Kursk | World News | WIONПодробнее

Ukraine conducted new successful military operation in Kursk, losses of Russian army announced hereПодробнее

Ukraine’s Kursk operation prevented potential Russian attack on KyivПодробнее

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Fierce battle between Russian and Western tanks took place in Kursk, Russians are having hard timeПодробнее

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Russia's counterattacks fail in Kursk: Ukraine will hold territory in region for several monthsПодробнее

Ukrainian army drives Russians into trap in KurskПодробнее

Russian army attacks own citizens - Residents of Kursk region ask to join UkraineПодробнее

Ukraine's Kursk Invasion Stalls as Russian Forces Advance Towards Pokrovsk in Donbas | Gen GD BakshiПодробнее

Russia region orders evacuation after Ukraine drone attack | BBC NewsПодробнее

After Kursk, Ukrainian army can advance towards Moscow and strike the capitalПодробнее

Voices from Sudzha, the Russian town under Ukrainian control | VOANewsПодробнее

Ukraine's Kursk offensive has changed the war with RussiaПодробнее

Russia may lose Kursk forever, Ukraine collected large amount of equipment in Sumy regionПодробнее

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Russian attack is halted in Kursk: Putin’s counterattack with 60,000 troops failedПодробнее

Ukraine invades Russia: Moscow says it has recaptured 10 settlements in KurskПодробнее