Watch: Russia launches large missile attack on Kyiv

Russia has launched a large missile attack on Kyiv, Ukrainian officials say.

Video shows burning debris falling from the sky and smoke billowing in the background, as people took shelter in a subway station.

Several explosions were also heard as Ukraine's anti-missile defence systems were activated.

It is the largest Russian attack on the capital in weeks, and follows a vow from Moscow for revenge over recent attacks by Ukraine on its border regions.