Russia has been accused of nuclear terrorism by Ukraine, following an attack on a spent radioactive fuel storage facility at the famous Chernobyl site.

Russia's deputy foreign minister has said the country is prepared to use all means "including nuclear ones" for its security.

Located about 800 kilometers (500 miles) from the Ukraine-Russia border, the Kuybyshevskiy oil refinery in Samara was set ablaze following Ukrainian drone strikes, independent Telegram news channel Ex...