State of emergency declared as Ukraine launches raid into Russia

A state of emergency has been declared in the Kursk region of Russia, as a rare cross-border attack by Ukrainian troops continued on Wednesday.

The acting regional governor, Alexei Smirnov, said the move was necessary "to eliminate the consequences of enemy forces coming into the region".

Russian officials said at least five civilians had been killed and 31 wounded, six of them children, since the start of the incursion.