The daughter of a key political ally of the Russian president has been killed in a suspected car bomb attack in Moscow, with her father thought to have been the intended target.
If confirmed as being linked to the war in Ukraine, the explosion would be the first time the violence of the war in Ukraine has reached the streets of Moscow.
Senior Russian figures have suggested that Ukraine could be behind the killing, but Ukraine denies that.
The woman killed in the Moscow bombing, Darya Dugina, is the daughter of Alexander Dugin, an extreme nationalist often referred to as Putin's 'philosophical guru' who supports Russia taking over Ukraine and the creation of a new Russian empire.
Our Europe correspondent Seamus Kearney joins Kathryn to discuss the bombing and the potential consequences.