Photo: AFP/Olga Maltseva
Militant group Islamic State has released footage of the alleged gunmen in the Moscow concert hall attack, backing up claims it was behind the Russian massacre which has killed at least 137 people.
And Western Balkan country Bosnia and Herzegovina has been given the green light for the start of formal EU membership talks.
In Ireland, the youngest ever prime minister is set to be sworn in after the shock resignation of Leo Varadkar.
Former health minister 37-year-old Simon Harris has been dubbed the 'TikTok Taoiseach', because of his heavy use of social media platforms.