Ukraine’s military says it has broken through Russia’s first line of defence in the occupied region around the city of Kherson.
Situated in the south of Ukraine, Kherson is a port city which serves as bridge to and from Crimea, which was annexed by Russia in 2014.
This second map shows where Russia holds territory in the north-east of Ukraine.
In his nightly address to his nation on Monday, Ukrainian President Volodymyr Zelensky said Ukraine will “return the Kharkiv region”.
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At least four people have been reported killed in the city of Kharkiv on Tuesday morning, after Russian shelling there, Ukrainian regional governor Oleh Synehubov said.